UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q
(Mark One)

[X]   QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
      ACT OF 1934

                   For the quarterly period ended May 31, 2011

[ ]   TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
      ACT OF 1934

                 For the transition period from _____ to _______

                          Commission File Number: None

                      Security Devices International, Inc.
               --------------------------------------------------
             (Exact Name of Registrant as Specified in its Charter)

                     Delaware                         Applied For
         -------------------------------          -------------------
         (State or other jurisdiction of           (I.R.S. Employer
          incorporation or organization)          Identification No.)

                      1101 Pennsylvania Ave., NW, 6th Floor
                              Washington, DC 20004
               -------------------------------------------------
               (Address of Principal Executive Offices) (Zip Code)

      Registrant's telephone number including area code:  (416) 787-1871

                                       N/A
              ----------------------------------------------------
         Former name, former address, and former fiscal year, if changed
                                since last report

Indicate by check mark whether the registrant (1) filed all reports required to
be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the past 12 months (or for such shorter period that the registrant was required
to file such reports), and (2) has been subject to such filing requirements for
the past 90 days. Yes [X] No [ ]

Indicate by check mark whether the registrant has submitted electronically and
posted on its corporate Web site, if any, every Interactive Data File required
to be submitted and posted pursuant to Rule 405 of Regulation S-T (ss.232.405 of
this chapter) during the preceding 12 months (or for such shorter period that
the registrant was required to submit and post such files). Yes [ ] No [ ]

Indicate by check mark whether the registrant is a large accelerated filer, an
accelerated filer, a non-accelerated filer, or a smaller reporting company. See
definition of "large accelerated filer", "accelerated filer" and "smaller
reporting company" in Rule 12b-2 of the Exchange Act.

Larger accelerated filer [  ]       Accelerated filer [  ]
Non-accelerated filer [  ]          Smaller reporting company [X]

Indicate by check mark whether registrant is a shell company (as defined in Rule
12b-2 of the Exchange Act).
Yes [  ]       No  [X]

Indicate the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest  practicable date:  25,878,050 shares outstanding
as of May 31, 2011.




                      SECURITY DEVICES INTERNATIONAL, INC.
                        (A Development Stage Enterprise)
                          INTERIM FINANCIAL STATEMENTS
                                  MAY 31, 2011
                        (Amounts expressed in US Dollars)
                                   (Unaudited)


                      SECURITY DEVICES INTERNATIONAL, INC.
                        (A Development Stage Enterprise)
                          INTERIM FINANCIAL STATEMENTS
                                  MAY 31, 2011
                        (Amounts expressed in US Dollars)
                                   (Unaudited)


                                TABLE OF CONTENTS

                                                                      Page No

Interim Balance Sheets as at May 31, 2011 and November 30, 2010           1

Interim Statement of Operations for the six months and three
months ended May 31, 2011 and May 31, 2010 and the period from
Inception (March 1, 2005) to May 31, 2011                                 2

Interim Statement of Cash Flows for the six months ended
May 31, 2011 and May 31, 2010 and the period from Inception
(March 1, 2005) to May 31, 2011                                           3

Interim Statements of changes in Stockholders' Deficit for the
six months ended May 31, 2011 and for the period from inception
(March 1, 2005) to November 30, 2010                                      4

Condensed Notes to Interim Financial Statements                        5-19


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Interim Balance Sheets
As at May 31, 2011 and November 30, 2010
(Amounts expressed in US Dollars)
                                                         May 31,   November 30,
                                                          2011        2010
                                                       ----------  ------------
                                                        (unaudited)  (audited)
                                      ASSETS                 $           $
CURRENT
   Cash                                                   66,188      247,328
   Deferred financing costs (note 10)                     28,513            -
   Prepaid expenses and other                             34,020       38,419
                                                         -------      -------
Total Current Assets                                     128,721      285,747
Plant and Equipment, net (Note 4)                         23,807       29,200
                                                         -------      -------

TOTAL ASSETS                                             152,528      314,947
                                                         -------      -------

                                   LIABILITIES

CURRENT LIABILITIES
   Accounts payable and accrued liabilities              756,912      787,641
   Current portion of Convertible debentures (note 10)   121,641            -
                                                         -------      -------
Total Current Liabilities                                878,553      787,641

Convertible Debentures (note 10)                          50,000            -
                                                         -------      -------
Total Liabilities                                        928,553      787,641

Going Concern (note 2)
Related Party Transactions (note 8)
Commitments (note 9)

                              STOCKHOLDERS' DEFICIT
Capital Stock (Note 5)
Preferred stock, $0.001 par value, 5,000,000
  shares authorized, Nil issued and
  outstanding (2010 - nil)
Common stock, $0.001 par value 50,000,000
  shares authorized, 25,878,050 issued
  and outstanding (2010 -25,878,050)                      25,878       25,878
Additional Paid-In Capital                            16,065,378   15,876,078
Deficit Accumulated During the Development Stage     (16,867,281) (16,374,650)
                                                      ----------   -----------
Total Stockholders' Deficit                             (776,025)    (472,694)
                                                      ----------   -----------

TOTAL LIABILITIES AND STOCKHOLDERS' DEFICIT              152,528      314,947
                                                      ----------   -----------

            See condensed notes to the interim financial statements.

                                       1


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Statements of Operations
For the Six Months and Three Months Ended May 31, 2011 and May 31, 2010 and the
Period from inception (March 1, 2005) to May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited- Prepared by Management)

                                                                     
                                          For the      For the      For the       For the
                                         six months   six months  three months  three months
                            Cumulative     ended        ended        ended         ended
                              Since       May 31,       May 31,      May 31,       May 31,
                            inception      2011          2010         2011          2010
                                             $            $             $             $
                            ----------------------------------------------------------------
OPERATING EXPENSES:

Research and product
Development cost             7,652,784     159,809      431,221           -       160,008
Amortization                    34,966       5,393        4,488       2,697         2,244
General and administration   9,438,380     313,684      432,403     146,812       159,320
                           -----------     -------     ---------  ----------    -----------

   TOTAL OPERATING EXPENSES 17,126,130     478,886      868,112     149,509       321,572
                           -----------     -------     ---------  ----------    -----------
LOSS FROM OPERATIONS       (17,126,130)   (478,886)    (868,112)   (149,509)     (321,572)
   Other expense- Interest     (13,745)    (13,745)                 (13,745)
   Other Income-Interest       272,594           -            -           -
                           -----------     -------     ---------  ----------    -----------
LOSS BEFORE INCOME TAXES   (16,867,281)   (492,631)    (868,112)   (163,254)     (321,572)

Income taxes                         -           -            -           -             -
                           -----------     -------     ---------  ----------    -----------
NET LOSS                   (16,867,281)   (492,631)    (868,112)   (163,254)     (321,572)
                           -----------     -------     ---------  ----------    -----------
Loss per share - basic
 and diluted                                 (0.02)       (0.05)      (0.01)        (0.02)
                                           -------     ---------  ----------    -----------
Weighted average common
 shares outstanding                     25,878,050   16,462,962  25,878,050    16,745,050
                                        ----------   ----------- -----------   ------------


            See condensed notes to the interim financial statements.

                                       2


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Interim Statement of Cash Flows
For the Six Months Ended May 31, 2011 and May 31, 2010
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)
                                                           For the     For the
                                                          six months  six months
                                           Cumulative       ended       ended
                                         since inception    May 31,     May 31,
                                         (March 1, 2005)    2011         2010
                                                $             $            $

CASH FLOWS FROM OPERATING ACTIVITIES
  Net loss for the period                  (16,867,281)    (492,631)   (868,112)
   Items not requiring an outlay of
    cash:
      Issue of shares for professional
       services                                584,500            -           -
      Stock based compensation (included
        in general and administration
        expenses)                            5,556,406            -     106,819
      Loss on cancellation of common stock      34,400            -           -
      Amortization                              34,966        5,393       4,488
      Amortization of debt discount              4,441        4,441           -
      Amortization of deferred financing
       cost                                      6,647        6,647           -
      Changes in non-cash working capital:
      Prepaid expenses and other               (34,020)       4,399      16,210
      Due to related parties                         -            -      32,250
      Accounts payable and accrued
       liabilities*                             721,752      (65,889)    185,506
                                            -----------   -----------  ---------

NET CASH USED IN OPERATING ACTIVITIES        (9,958,189)    (537,640)  (522,839)
                                            -----------   -----------  ---------

CASH FLOWS FROM INVESTING ACTIVITIES
  Acquisition of plant and equipment            (58,773)           -          -
                                            -----------   -----------  ---------
NET CASH USED IN INVESTING ACTIVITIES           (58,773)           -          -
                                            -----------   -----------  ---------

CASH FLOWS FROM FINANCING ACTIVITIES

  Stock subscriptions received                  190,000      160,000     50,000
  Net proceeds from issuance of common
   shares                                     9,629,150            -    357,500
  Proceeds from convertible debentures          196,500      196,500          -
  Cancellation of common stock                  (50,000)           -          -
  Advances from a non related party                   -            -     50,000
  Exercise of stock options                     117,500            -     10,800
                                            -----------   -----------  ---------
NET CASH PROVIDED BY FINANCING ACTIVITIES    10,083,150      356,500    468,300
                                            -----------   -----------  ---------

NET INCREASE (DECREASE) IN CASH FOR
 THE PERIOD                                      66,188     (181,140)   (54,539)
  Cash, beginning of period                           -      247,328     55,431
                                            -----------   -----------  ---------
CASH, END OF PERIOD                              66,188       66,188        892
                                            ===========   ===========  =========
INCOME TAXES PAID                                      -           -          -
                                            ===========   ===========  =========
INTEREST PAID                                          -           -          -
                                            ===========   ===========  =========

* Excludes the credit of $35,160 to accrued liability resulting from deferred
financing (a non cash item)

           See condensed notes to the interim financial statements

                                       3


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Interim Statement of Changes in Stockholders' Equity
Six months ended May 31, 2011 and for Period from Inception (March 1, 2005) to
November 30, 2010.
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management )

                                                                                         

                                     Number of       Common     Additional        Deficit
                                      Common         Shares      Paid-in     Accumulated During
                                      Shares         amount      Capital      Development Stage       Total
                                                       $            $                $                  $
                                     ----------      ------     ----------   ------------------  -----------
Balance as of March 1, 2005                  -           -             -                -                 -
Issuance of Common shares
 for professional services           6,525,000       6,525         58,725               -            65,250
Issuance of common shares for cash     397,880         398         99,072                            99,470
Net loss for the period                      -           -              -        (188,699)         (188,699)
                                     ----------      ------     ----------   ------------------  -----------
Balance as of November 30, 2005      6,922,880       6,923        157,797        (188,699)          (23,979)
                                     ----------      ------     ----------   ------------------  -----------
Issuance of common shares for cash     956,000         956         94,644               -            95,600
Issuance of common shares for cash     286,000         286         49,764               -            50,050
Issuance of common shares  to
 consultant for services                50,000          50          8,700               -             8,750
Issuance of common shares for cash   2,000,000       2,000        398,000               -           400,000
Exercise of stock options              950,000         950         94,050               -            95,000
Issuance of common shares for cash
 (net of agent commission)             200,000         200        179,785               -           179,985
Stock subscriptions received                                    1,165,500               -         1,165,500
Stock based compensation                     -           -      1,049,940               -         1,049,940
Net loss for the year                        -           -              -      (1,660,799)       (1,660,799)
                                    ----------      ------     ----------   ------------------   -----------
Balance as of November 30, 2006     11,364,880      11,365      3,198,180      (1,849,498)        1,360,047
                                    ----------      ------     ----------   ------------------   -----------
Issuance of common shares for stock
Subscriptions received in prior year 1,165,500       1,165         (1,165)              -                 -
Issuance of common shares for cash   1,170,670       1,171      1,169,499                         1,170,670
Issuance of common shares for cash
 and services                           50,000          50        154,950                           155,000
Issuance of common shares for cash
 (net of expenses)                   2,139,000       2,139      4,531,236                         4,533,375
Cancellation of stock               (1,560,000)     (1,560)       (14,040)                          (15,600)
Stock based compensation                                        2,446,433                         2,446,433
Issue of warrants                                                 357,094                           357,094
Net loss for the year                        -           -              -      (4,827,937)       (4,827,937)
                                    ----------      ------     ----------   ------------------   -----------
Balance as of November 30, 2007     14,330,050      14,330     11,842,187      (6,677,435)        5,179,082
                                    ----------      ------     ----------   ------------------   -----------
Exercise of stock options              117,000         117         11,583                            11,700
Stock based compensation                     -           -      1,231,056               -         1,231,056
Net loss for the year                        -           -              -      (4,401,786)       (4,401,786)
                                    ----------      ------     ----------   ------------------   -----------
Balance as of November 30, 2008     14,447,050      14,447     13,084,826     (11,079,221)        2,020,052
                                    ----------      ------     ----------   ------------------   -----------
Issuance of common shares for cash     788,000         788        196,212                           197,000
Stock based compensation                     -           -        177,990               -           177,990
Compensation expense for warrants                                   4,223                             4,223
Net loss for the year                        -           -              -      (2,974,467)       (2,974,467)
                                    ----------      ------     ----------   ------------------   -----------
Balance as of November 30, 2009     15,235,050      15,235     13,463,251     (14,053,688)         (575,202)
                                    ----------      ------     ----------   ------------------   -----------
Issuance of common shares for cash   8,143,000       8,143      1,665,157                         1,673,300
Issuance of common shares
 For services                        2,500,000       2,500        428,000                           430,500
Stock subscriptions received                                      30,000                             30,000
Stock based compensation                                         289,670                            289,670
Net loss for the year                                                          (2,320,962)       (2,320,962)
                                    ----------      ------     ----------   ------------------   -----------
Balance as of November 30, 2010     25,878,050      25,878    15,876,078      (16,374,650)         (472,694)
Stock subscriptions received                                     160,000                            160,000
Beneficial conversion feature on
 Convertible debt                                                 29,300                             29,300
Net loss for the period                                                          (492,631)         (492,631)
                                    ----------      ------     ----------   ------------------   -----------
Balance as of May 31, 2011          25,878,050      25,878    16,065,378      (16,867,281)         (776,025)


            See condensed notes to the interim financial statements

                                       4


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)

1.    BASIS OF PRESENTATION

       The accompanying unaudited condensed financial statements have been
       prepared in accordance with the instructions to Form 10-Q and therefore
       do not include all information and footnotes necessary for a fair
       presentation of financial position, results of operations and cash flows
       in conformity with U.S. generally accepted accounting principles (GAAP);
       however, such information reflects all adjustments (consisting solely of
       normal recurring adjustments), which are, in the opinion of management,
       necessary for a fair statement of the results for the interim periods.

       The condensed financial statements should be read in conjunction with the
       financial statements and Notes thereto together with management's
       discussion and analysis of financial condition and results of operations
       contained in the Company's annual report on Form 10-K for the year ended
       November 30, 2010. In the opinion of management, the accompanying
       condensed financial statements reflect all adjustments of a normal
       recurring nature considered necessary to fairly state the financial
       position of the Company at May 31, 2011, the results of its operations
       for the six -and three-month periods ended May 31, 2011 and May 31, 2010,
       and its cash flows for the six -month periods ended May 31, 2011 and May
       31, 2010. In addition, some of the Company's statements in this quarterly
       report on Form 10-Q may be considered forward-looking and involve risks
       and uncertainties that could significantly impact expected results. The
       results of operations for the six -month period ended May 31, 2011 are
       not necessarily indicative of results to be expected for the full year.

       The Company was incorporated under the laws of the state of Delaware on
       March 1, 2005.

2.   NATURE OF OPERATIONS AND GOING CONCERN

        The Company is a defense technology corporation specializing in the
        development of innovative next generation less-than-lethal solutions for
        security situations that do not require the use of deadly force, or
        ammunition. SDI is currently developing manufacturing partnerships to
        assist in the deployment of their patent pending family of products.
        These products consist of; the Blunt Impact Projectile 40mm (BIP40), and
        the Wireless Electric Projectile 40mm (WEP40).

        These financial statements have been prepared in accordance with
        generally accepted accounting principles applicable to a going concern,
        which assumes that the Company will be able to meet its obligations and
        continue its operations for its next fiscal year.

                                       5


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)


2.   NATURE OF OPERATIONS AND GOING CONCERN -Cont'd

        At May 31, 2011, the Company has not yet achieved profitable operations,
        had a working capital deficiency of $749,832 and has accumulated losses
        of $16,867,281 since inception and expects to incur further losses in
        the development of its business, all of which limits the Company's
        ability to continue as a going concern. The Company has a need for
        additional working capital to launch its blunt impact and electric 40mm
        round products, meet its ongoing levels of corporate overhead and
        discharge its liabilities as they come due.

        In order to finance the continued development, the Company is working
        towards raising of appropriate capital in the near future. During the
        year ended November 30, 2009, the Company raised $197,000 through issue
        of common shares and warrants. The Company further raised an additional
        $1,673,300 net through the issue of 8,143,000 common shares and also
        received $30,000 subscription for shares pending allotment during the
        year ended November 30, 2010. The Company further received an additional
        $160,000 subscription for shares pending allotment during the six month
        period ended May 31, 2011 and also raised an additional $196,500 by
        issue of Convertible Debentures.

        While the Company has been successful in securing financings in the
        past, there is no assurance that it will be able to do so in the future.
        Accordingly, these financial statements do not give effect to
        adjustments, if any, that would be necessary should the Company be
        unable to continue as a going concern.

        The Company has incurred a loss of $ 492,631 during the six month period
        ended May 31, 2011 partly due to its research and development
        activities. At May 31, 2011, the Company had an accumulated deficit
        during the development stage of $16,867,281 which includes a non- cash
        stock based compensation expense of $5,556,406 for issue of options and
        warrants.

3.   RESEARCH AND PRODUCT DEVELOPMENT

        Research and Product Development costs, including acquired research and
        product development costs, are charged against income in the period
        incurred.

                                       6


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)


4.   PLANT AND EQUIPMENT, NET

       Plant and equipment are recorded at cost less accumulated depreciation.
       Depreciation is provided commencing in the month following acquisition
       using the following annual rate and method:

                Computer equipment      30%    declining balance method
                Furniture and fixtures  30%    declining balance method
                Leasehold Improvements         straight line over period of
                                               lease

                                     May 31, 2011           November 30, 2010
                                  --------------------     -------------------
                                           Accumulated             Accumulated
                                  Cost    Amortization     Cost   Amortization
                                    $           $            $          $

        Computer
        equipment                35,211      22,657       35,211      20,442
        Furniture and fixtures   15,310      10,058       15,310       9,131
        Leasehold improvements    8,252       2,251        8,252           -
                                 ------      ------       ------      ------
                                 58,773      34,966       58,773      29,573
                                 ------      ------       ------      ------

        Net carrying amount           $23,807                  $29,200
                                      -------                  -------

5.   CAPITAL STOCK

        a) Authorized

            50,000,000 Common shares, $0.001 par value

          And

            5,000,000 Preferred shares, $0.001 par value

     The Company's Articles of Incorporation authorize its Board of Directors to
     issue up to 5,000,000 shares of preferred stock. The provisions in the
     Articles of Incorporation relating to the preferred stock allow the
     directors to issue preferred stock with multiple votes per share and
     dividend rights which would have priority over any dividends paid with
     respect to the holders of SDI's common stock.

                                       7


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)


        b) Issued

           25,878,050 Common shares

        c)  Changes to Issued Share Capital

       Year ended November 30, 2010
       ----------------------------

       On January 4, 2010 the Company completed the placement for 1,510,000
       common shares to private investors. The shares were sold at a price of
       $0.25 per common share for a total consideration of $377,500. The Company
       paid $20,000 as finder's fees. The shares of common stock are restricted
       securities, as that term is defined in Rule 144 of the Securities and
       Exchange Commission. The Company relied upon the exemption provided by
       Section 4(2) of the Securities Act of 1933 in this connection.

       In May, 2010, the Company received $10,800 being the exercise of options
       to acquire 108,000 common shares at an exercise price of $0.10 per common
       share. The Company issued 108,000 common shares during the quarter ended
       August 31, 2010.

      On June 1, 2010 the Company sold 1,000,000 shares of common stock to a
      private investor at a price of $0.20 per share. The shares of common stock
      are restricted securities, as that term is defined in Rule 144 of the
      Securities and Exchange Commission. The Company relied upon the exemption
      provided by Section 4(2) of the Securities Act of 1933 in connection with
      the sale of these securities.

      In June 9, 2010 the Company sold 650,000 shares of common stock to two
      private investors at a price of $0.20 per share. The Company relied upon
      the exemption provided by Section 4(2) of the Securities Act of 1933 in
      connection with the sale of these shares. The shares sold are restricted
      securities, as that term is defined in Rule 144 of the Securities and
      Exchange Commission.

      On August 31, 2010 the Company sold 700,000 shares of common stock to a
      private investor at a price of $0.20 per share. The shares of common stock
      are restricted securities, as that term is defined in Rule 144 of the
      Securities and Exchange Commission. The Company relied upon the exemption
      provided by Section 4(2) of the Securities Act of 1933 in connection with
      the sale of these securities.

                                       8


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)

5. CAPITAL STOCK-Cont'd

      On September 22, 2010 the Company sold 2,250,000 shares of common stock to
      private investors at a price of $0.20 per share. The shares of common
      stock are restricted securities, as that term is defined in Rule 144 of
      the Securities and Exchange Commission. The Company relied upon the
      exemption provided by Section 4(2) of the Securities Act of 1933 in
      connection with the sale of these securities.

      On October 18, 2010 the Company sold 1,925,000 shares of common stock to
      private investors at a price of $0.20 per share. The shares of common
      stock are restricted securities, as that term is defined in Rule 144 of
      the Securities and Exchange Commission. The Company relied upon the
      exemption provided by Section 4(2) of the Securities Act of 1933 in
      connection with the sale of these securities.

      On October 18, 2010 the Company issued 2,500,000 shares of common stock
      for services which includes 550,000 common shares issued to directors for
      settlement of debt and cancellation of options and 1,800,000 common shares
      for services provided by an outside Company which is owned by an officer
      of this Company.

       Six months ended May 31, 2011
       -----------------------------

       The Company received subscriptions for 800,000 common shares at $0.20 per
      share. The Company has not issued any shares during this period.


6. STOCK BASED COMPENSATION

        Year ended November 30, 2010
        ----------------------------

       On December 4, 2009, the Company approved the reduction of the exercise
       price of 300,000 outstanding options which had earlier been issued at a
       price of $0.50 to a new option price of $0.25 per share, with all other
       terms of the original grant remaining the same. The Company expensed this
       additional non-cash stock based compensation expense relating to this
       modification for $6,534. The fair value of each option used for the
       purpose of estimating the stock compensation is calculated using the
       Black-Scholes option pricing model with the following weighted average
       assumptions:

          Risk free rate                                              2.61%
          Expected dividends                                             0%
          Forfeiture rate                                                0%
          Volatility                                                173.24%
          Exercise price                                              $0.25
          Increase in fair value due to reduction in exercise
           price of options                                           $0.02

                                       9


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)

6. STOCK BASED COMPENSATION- Cont'd

          Market price of Company's common stock on date of
              reduction in exercise price                            $ 0.25
          Stock-based compensation cost expensed                     $6,534

       On December 4, 2009, the Company approved the extension of the expiration
       of 2,900,000 outstanding options from their initial expiry date ranging
       from November 2011 to April 2013 to a new expiration date of June 30,
       2014 with all other terms of the original grant remaining the same. The
       Company expensed this additional non-cash stock based compensation
       expense relating to this modification for $63,282. The fair value of each
       option used for the purpose of estimating the stock compensation is
       calculated using the Black-Scholes option pricing model with the
       following weighted average assumptions:

            Risk free rate                                            2.61%
            Expected dividends                                           0%
            Forfeiture rate                                              0%
            Volatility                                              173.24%
            Stock-based compensation cost expensed                  $63,282

       On January 4, 2010, the board of directors granted options to a director
       to acquire 100,000 common shares at an exercise price of $0.25 per share.
       All of these options vested immediately and have an expiry of five years.
       The Company expensed stock based compensation cost of $23,677. The fair
       value of each option used for the purpose of estimating the stock
       compensation is calculated using the Black-Scholes option pricing model
       with the following weighted average assumptions:

            Risk free rate                                            2.61%
            Expected dividends                                           0%
            Forfeiture rate                                              0%
            Volatility                                              170.69%
            Market price of Company's common stock on date
               of grant of options                                    $0.25
            Stock-based compensation cost expensed                  $23,677

       On May 20, 2010, the Company approved the extension of the expiration of
       50,000 outstanding options from their initial expiry date from May 21,
       2010 to a new expiration date of June 30, 2014 and a reduction in the
       exercise price of the options from $0.50 to $0.25 with all other terms of
       the original grant remaining the same. The Company expensed this
       additional non-cash stock based compensation expense relating to this
       modification for $13,326. The fair value of each option used for the
       purpose of estimating the stock compensation is calculated using the
       Black-Scholes option pricing model with the following weighted average
       assumptions:

                                       10


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)

6. STOCK BASED COMPENSATION-Cont'd

            Risk free rate                                            2.61%
            Expected dividends                                           0%
            Forfeiture rate                                              0%
            Volatility                                              166.16%
            Stock-based compensation cost expensed                  $13,326

       On June 15, 2010, the board of directors granted options to a director to
       acquire 350,000 common shares, two directors to acquire 50,000 common
       shares each and to a consultant to acquire 35,000 common shares. All
       these 485,000 options were issued at an exercise price of $0.20 per share
       and vest immediately with an expiry term of five years. The Company
       expensed stock based compensation cost of $119,368. The fair value of
       each option used for the purpose of estimating the stock compensation is
       calculated using the Black-Scholes option pricing model with the
       following weighted average assumptions:

            Risk free rate                                            2.61%
            Expected dividends                                           0%
            Forfeiture rate                                              0%
            Volatility                                              164.99%
            Market price of Company's common stock on date
              of grant of options                                     $0.26
            Stock-based compensation cost expensed                 $119,368

       On September 30, 2010, the board of directors granted options to two
       directors to acquire 50,000 common shares each. All these 100,000 options
       were issued at an exercise price of $0.20 per share and vest immediately
       with an expiry term of five years. The Company expensed stock based
       compensation cost of $25,271. The fair value of each option used for the
       purpose of estimating the stock compensation is calculated using the
       Black-Scholes option pricing model with the following weighted average
       assumptions:

            Risk free rate                                            2.61%
            Expected dividends                                           0%
            Forfeiture rate                                              0%
            Volatility                                              189.45%
            Market price of Company's common stock on date
              of grant of options                                     $0.26
            Stock-based compensation cost expensed                  $25,271

       On October 1, 2010, the Board cancelled 725,000 options issued to a
       director having an exercise price of $0.25 per share and expiring on
       various dates ranging from October 29, 2011 to January 4, 2015 and issued
       warrants to acquire 397,000 common shares exercisable at $0.20 per share
       with an expiry term of five years and 500,000 common shares in lieu
       thereof. All outstanding

                                       11


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)

6. STOCK BASED COMPENSATION-Cont'd

       payables to the said director for services provided were adjusted against
       the said issuance of common shares. The Company expensed this additional
       non-cash stock based compensation expense relating to this modification
       for $31,097. The fair value of each option used for the purpose of
       estimating the stock compensation is calculated using the Black-Scholes
       option pricing model with the following weighted average assumptions:

            Risk free rate                                            3.25%
            Expected dividends                                           0%
            Forfeiture rate                                              0%
            Volatility                                              189.42%
            Stock-based compensation cost expensed                  $31,097

       On October 1, 2010, the Board cancelled 400,000 options issued to a
       director having an exercise price of $0.25 per share and expiring on
       various dates ranging from October 29, 2011 to June 30, 2014 and issued
       warrants to acquire 50,000 common shares exercisable at $0.20 per share
       with an expiry term of five years and 50,000 common shares in lieu
       thereof. All outstanding payables to the said director for services
       provided were adjusted against the said issuance of common shares. The
       Company concluded that there was no additional non-cash stock based
       compensation expense relating to this modification. The fair value of
       each option used for the purpose of estimating the stock compensation is
       calculated using the Black-Scholes option pricing model with the
       following weighted average assumptions:

            Risk free rate                                            3.25%
            Expected dividends                                           0%
            Forfeiture rate                                              0%
            Volatility                                              189.42%
            Stock-based compensation cost expensed                     $Nil

       On October 1, 2010, the Board cancelled 175,000 options issued to an
       officer having an exercise price of $0.25 per share and expiring on June
       30, 2014 and issued warrants to acquire 175,000 common shares exercisable
       at $0.20 per share with an expiry term of five years. The Company
       expensed this additional non-cash stock based compensation expense
       relating to this modification for $1,607. The fair value of each option
       used for the purpose of estimating the stock compensation is calculated
       using the Black-Scholes option pricing model with the following weighted
       average assumptions:

            Risk free rate                                            3.25%
            Expected dividends                                           0%
            Forfeiture rate                                              0%
            Volatility                                              189.42%
            Stock-based compensation cost expensed                   $1,607

                                       12


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)

6. STOCK BASED COMPENSATION-Cont'd

       On October 1, 2010, the Board cancelled 300,000 options each for a total
       of 600,000 options issued to two consultants having an exercise price of
       $0.25 per share and expiring on June 30, 2014 and issued warrants to each
       to acquire 300,000 common shares exercisable at $0.20 per share for a
       total of 600,000 warrants with an expiry term of five years. The Company
       expensed this additional non-cash stock based compensation expense
       relating to this modification for $5,508. The fair value of each option
       used for the purpose of estimating the stock compensation is calculated
       using the Black-Scholes option pricing model with the following weighted
       average assumptions:

            Risk free rate                                            3.25%
            Expected dividends                                           0%
            Forfeiture rate                                              0%
            Volatility                                              189.42%
            Stock-based compensation cost expensed                   $5,508

      As of November 30, 2010 there was $Nil of unrecognized expense related to
      non-vested stock-based compensation arrangements granted.

         Six months ended May 31, 2011
         -----------------------------

        The Company did not issue any options during the six month period ended
        May 31, 2011.

7. STOCK PURCHASE WARRANTS

        Year ended November 30, 2010
        ----------------------------

        On October 1, 2010, the Board cancelled 725,000 options issued to a
        director having an exercise price of $0.25 per share and expiring on
        various dates ranging from October 29, 2011 to January 4, 2015 and
        issued warrants to acquire 397,000 common shares exercisable at $0.20
        per share with an expiry term of five years and 500,000 common shares in
        lieu thereof.

        On October 1, 2010, the Board cancelled 400,000 options issued to a
        director having an exercise price of $0.25 per share and expiring on
        various dates ranging from October 29, 2011 to June 30, 2014 and issued
        warrants to acquire 50,000 common shares exercisable at $0.20 per share
        with an expiry term of five years and 50,000 common shares in lieu
        thereof.

                                       13


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)

7. STOCK PURCHASE WARRANTS-Cont'd

        On October 1, 2010, the Board cancelled 175,000 options issued to an
        officer having an exercise price of $0.25 per share and expiring on June
        30, 2014 and issued warrants to acquire 175,000 common shares
        exercisable at $0.20 per share with an expiry term of five years.

        On October 1, 2010, the Board cancelled 300,000 options each for a total
        of 600,000 options issued to two consultants having an exercise price of
        $0.25 per share and expiring on June 30, 2014 and issued warrants to
        each to acquire 300,000 common shares exercisable at $0.20 per share for
        a total of 600,000 warrants with an expiry term of five years.

        Six months ended May 31, 2011
        -----------------------------

        The Company did not issue any stock purchase warrants during the six
        month period ended May 31, 2011.

8. RELATED PARTY TRANSACTIONS

         Six months ended May 31, 2011
         -----------------------------

        The Company expensed a total of $43,000 as Management fee for payment to
        its two directors for the six month period ended May 31, 2011.

        The Company expensed $7,000 for services provided by the CFO of the
        Company and $48,000 for services provided by COO of the Company.

        Six months ended May 31, 2010
        -----------------------------

     a)   A Company  Director  has charged the Company a total  amount of $1,500
          for  providing  office space during the six month period ended May 31,
          2010.

     b)   The  directors  were  compensated  from  January  1, 2010 as per their
          consulting  agreements  with the  Company.  During the  quarter  ended
          February 28, 2010, one director was paid $21,500 as consulting fee and
          $3,000 as  automobile  allowance;  one  director  was paid  $17,750 as
          consulting  fee and $2,000 as automobile  allowance;  one director was
          paid $16,500 as  consulting  fee and $2,000 as  automobile  allowance.
          During the quarter ended May 31, 2010,  the Company  expensed  $58,500
          being  remuneration  for directors,  including a director who resigned
          May 30,  2010.  As of May 31,  2010,  $32,250 was owed to the existing
          directors.

                                       14


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)

       c)  On December 4, 2009 the board of directors approved extension of the
           expiration of outstanding options from their initial expiry date to a
           new expiration date of June 30, 2014 with all other terms of the
           original grant remaining the same.

          1.   Extension  of the  expiration  of 1,150,000  outstanding  options
               already issued to three  directors from their initial expiry date
               to a new expiration date of June 30, 2014

          2.   Extension  of  the  expiration  of  300,000  outstanding  options
               already  issued to an officer from their initial expiry date to a
               new expiration date of June 30, 2014.

           Stock based compensation cost relating to the extension in the expiry
           date of the outstanding options issued to three directors and an
           officer, as above, amounting to $30,213 has been expensed to general
           and administration expense.

       d)  On January 4, 2010, the board of directors granted options to a
           director to acquire 100,000 common shares at an exercise price of
           $0.25 per share. All of these options vested immediately and have an
           expiry of five years. The Company expensed stock based compensation
           cost of $23,677.

9. COMMITMENTS

     a) Effective January 1, 2011, a director of the Company renewed consulting
        agreement with the Company on the following terms:

                                        Monthly
                                   Consulting Fees from      Expiration of
                                     January through           Consulting
         Name                         December 2011             Agreement
         ----                      ---------------------     -------------

         Boaz Dor                         $3,000              12-31-2011

                                       15


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)

9.    COMMITMENTS-Cont'd

     b)   On  November  30,  2009,  the Company  entered  into a  Memorandum  of
          Understanding  ("MOU")  with  its  research  and  development  service
          contractor ("the contractor"). This MOU covers various alternatives to
          the Company to settle the liability to the contractor in the amount of
          $658,932 as at November 30, 2009. Should the Company become insolvent,
          or  is  unable  to  continue  operations,  or is  unable  to  pay  the
          contractor  pursuant to the MOU, then it will grant the  contractor an
          exclusive,   irrevocable,   worldwide,   assignable,  sub  licensable,
          perpetual  license to  further  develop  and to market  the  Company's
          electric  bullet  (WEP40) and blunt  impact  (BIP40)  technology.  The
          Company will  negotiate a royalty in the event of granting such rights
          to  the  contractor.   The  Company  terminated  their  MOU  with  the
          contractor during the quarter ended February 28, 2011 and is currently
          negotiating with the contractor for future services.

     c)   The Company has  commitments  for leasing office premises in Oakville,
          Ontario,  Canada to September  30, 2012 at a monthly  rent  (excluding
          proportionate  realty and  maintenance  costs and  taxes) of  Canadian
          $2,500 per month.

     d)   The Company signed a consulting  agreement with the COO of the Company
          for a period of six months  commencing  November 1, 2010.  The officer
          will be paid $8,000 plus applicable taxes.

     e)   The  Company  signed  an  agreement  with  a  company  to  develop  an
          Instructor   and   Operator   Training   course   for   its   line  of
          less-than-lethal  rounds at a total commitment of $40,000. The Company
          has paid $40,000 during the six month period ended May 31, 2011.

                                       16


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)

10. CONVERTIBLE DEBENTURES

The carrying values of the Company's convertible debentures consist of the
following as of May 31, 2011:
                                                                  Carrying Value
-------------------------------------------------------------------------------
$100,000 face value convertible debenture due March 23, 2012    $     (83,032)
$46,500 face value convertible debenture due April 14, 2012           (38,609)
$50,000 face value convertible debenture due June 30, 2014            (50,000)
                                                               ----------------
Total                                                           $    (171,641)
                                                               ================

$100,000 Face Value Convertible Debenture
-----------------------------------------

On March  23,  2011,  the  Company  issued a  $100,000  face  value  Convertible
Debenture,  due March 23,  2012  ("Convertible  Debenture  1"),  to an  investor
("Investor") for net proceeds of $100,000. The debenture accrues interest at 10%
per annum.  Both  principal and interest are payable at maturity.  However,  the
principal amount,  plus accrued interest,  may be converted into common stock at
the  option  of the  Investor  at any  time  during  the term to  maturity  at a
conversion  price of $0.20 per share,  subject to adjustment  solely for capital
reorganization  events. The debenture also embodies certain  traditional default
provisions  that are  linked to credit or  interest  risks,  such as  bankruptcy
proceedings,  liquidation  events  and  corporate  existence.  In the  event the
Company  enters  into a  Subsequent  Financing  (an  offering  of no  less  than
$3,000,000)  that  occurs  prior  to  the  Maturity  Date,  the  debenture  will
automatically convert at a conversion price per share equal to $0.20 (subject to
adjustment for stock splits,  recapitalizations  or similar events)  immediately
prior to the closing of the Financing. In addition to any principal payment made
at maturity or any prepayment of principal,  the Company is required to issue as
an additional  capital payment common stock equal to 20% of the principal amount
paid or payable divided by the then applicable Conversion price.

$46,500 Face Value Convertible Debenture
----------------------------------------

On  April  14,  2011,  the  Company  issued a  $46,500  face  value  Convertible
debenture,  due April 14,  2012  ("Convertible  Debenture  3"),  to an  investor
("Investor") for net proceeds of $100,000. The Debenture accrues interest at 10%
per annum.  Both  principal and interest are payable at maturity.  However,  the
principal amount,  plus accrued interest,  may be converted into common stock at
the  option  of the  Investor  at any  time  during  the term to  maturity  at a
conversion  price of $0.20 per share,  subject to adjustment  solely for capital
reorganization  events. The debenture also embodies certain  traditional default
provisions  that are  linked to credit or  interest  risks,  such as  bankruptcy
proceedings,  liquidation  events  and  corporate  existence.  In the  event the
Company  enters  into a  Subsequent  Financing  (an  offering  of no  less  than
$3,000,000)  that  occurs  prior  to  the  Maturity  Date,  the  debenture  will
automatically convert at a conversion price per share equal to $0.20 (subject to
adjustment for stock splits,  recapitalizations  or similar events)  immediately
prior to the closing of the Financing. In addition to any principal payment made
at maturity or any prepayment of principal,  the Company is required to issue as
an additional  capital payment common stock equal to 20% of the principal amount
paid or payable divided by the then applicable Conversion price.

                                       17


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)

10. CONVERTIBLE DEBENTURES-Cont'd

$50,000 Face Value Convertible Debenture
----------------------------------------

On May 19, 2011, the Company issued a $50,000 face value Convertible  debenture,
due June 30 2014  ("Convertible  Debenture 2"), to an investor  ("Investor") for
net proceeds of $50,000.  The Debenture  accrues  interest at 8% per annum.  The
principal  is payable at maturity  whereas the  interest is payable  annually in
arrears on each anniversary of the issuance date. The principal may be converted
in  multiples  of $1,000 into common  stock at the option of the Investor at any
time  during the term to  maturity.  The  conversion  prices are (i) $0.30 on or
before  the first  anniversary  of the  debenture;  (ii)  $0.35 on or before the
second  anniversary  of  the  debenture;   and  (iii)  $0.40  after  the  second
anniversary of the issuance of the debenture and maturity. The conversion prices
are subject to adjustment solely for capital reorganization events.

The debenture  provides  down-round  protection to the Investor in the event the
Company  issues  rights,  options or  warrants to all or  substantially  all the
holders of the Common  Shares  pursuant to which those  holders are  entitled to
subscribe  for,  purchase or  otherwise  acquire  Common  Shares or  Convertible
Securities  within a period  of 45 days  from  the  date of issue  (the  "Rights
Period") at a price,  or at a conversion  price, of less than 90% of the Current
Market Price at the record date for such distribution (any such issuance being a
"Rights  Offering"  and Common  Shares  that may be  acquired in exercise of the
Rights Offering, or upon conversion of the Convertible Securities offered by the
Rights  Offering,  being the "Offered  Shares").  The  debenture  also  embodies
certain  traditional  default  provisions  that are linked to credit or interest
risks,  such  as  bankruptcy  proceedings,   liquidation  events  and  corporate
existence. In the event of a reorganization, consolidation, merger, or a sale of
all or substantially all of the assets, the Company has the option to redeem the
debenture at (i) $1,250 per $1,000 of  Principal  Sum, if occurring on or before
the first  anniversary  of issuance;  (ii) $1,125 per $1,000 of Principal Sum if
occurring  after the first  anniversary  and prior to the second  anniversary of
issuance;  and (iii) $1,050 per $1,000 of Principal  Sum if occurring  after the
second anniversary of issuance and prior to the end of the term.

Accounting for the Financings:

The Company has evaluated the terms and conditions of the convertible debentures
under the guidance of ASC 815,  Derivatives and Hedging. The conversion features
meet the  definition of  conventional  convertible  for purposes of applying the
conventional convertible exemption. The definition of conventional  contemplates
a limitation on the number of shares issuable under the arrangement. In the case
of  Convertible  Debenture 1 and  Convertible  Debenture  3, the  instrument  is
convertible into a fixed number of shares and there are no down round protection
features contained in the contracts. In the case of Convertible Debenture 2, the
instrument  is  convertible  into  a  fixed  number  of  shares.  Although  this
instrument  contains a down-round  protection  feature,  it was determined to be
insignificant and did not preclude characterization as conventional convertible.
Since  the  Convertible   Debentures   achieved  the  conventional   convertible
exemption,  the Company was  required to consider  whether the hybrid  contracts
embody a beneficial  conversion feature. In the case of Convertible  Debenture 1
and 3,  the  calculation  of  the  effective  conversion  amount  resulted  in a
beneficial conversion feature.  However, in the case of Convertible Debenture 2,
the  calculation  of  the  effective  conversion  amount  did  not  result  in a
beneficial

                                       18


SECURITY DEVICES INTERNATIONAL, INC.
(A Development Stage Enterprise)
Condensed Notes to Interim Financial Statements
May 31, 2011
(Amounts expressed in US Dollars)
(Unaudited-Prepared by Management)

10. CONVERTIBLE DEBENTURES-Cont'd

conversion feature. At inception,  the Company recorded a beneficial  conversion
feature  for  Convertible  Debenture 1 and 3, as a  component  of  stockholder's
equity.

The automatic conversion provision embedded in Convertible Debenture 1 and 3 and
the optional  redemption  feature  embedded in Convertible  Debenture 2 were not
considered  clearly and closely  related to the host debt  instrument.  However,
these features do not require bifurcation and liability  classification  because
exercisability  is solely at the  Company's  option.  The Company  analyzed  the
down-round protection feature,  which expires 45 days from the inception date of
the financing. The Company determined that there were no contemplated financings
during this time period that would trigger the  down-round  protection  feature.
Given the feature's short-term nature and the unlikelihood of a triggering event
occurring,  the down-round protection feature was deemed immaterial at inception
and thus does not require bifurcation and liability classification.

The purchase  price  allocation for  Convertible  Debenture 1 resulted in a debt
discount of $20,000.  The purchase price allocation for Convertible  Debenture 3
resulted in a debt  discount of $9,300.  The discount on the  debenture  will be
amortized  through  periodic  charges to interest  expense  over the term of the
debenture  using the effective  interest  method.  Amortization of debt discount
amounted  to  $4,441  during  the  period  from   inception  to  May  31,  2011.
Additionally,  the Company recorded accrued interest of $2,657 on the debentures
from inception through May 31, 2011.

The Company is required to issue common stock as an additional  capital  payment
to any principal  payment made on the  Convertible  Debenture 1 and  Convertible
Debenture  3. The Company has  recorded  this  commitment  as a liability in the
amount of $35,160.  The offsetting  charge is to deferred  financing  costs. The
deferred  financing costs will be amortized through periodic charges to interest
expense  over  the  term  of  the  debenture  using  the  straight-line  method.
Amortization  of deferred  financing  costs amounted to $6,647 during the period
from inception to May 31, 2011.

11. SUBSEQUENT EVENTS

Subsequent to May 31, 2011, the Company  raised an additional  $210,000 by issue
of convertible  debentures.  The Debentures accrue interest at 8% per annum. The
principal  is payable at maturity  whereas the  interest is payable  annually in
arrears on each anniversary of the issuance date. The principal may be converted
in  multiples  of $1,000 into common  stock at the option of the Investor at any
time  during the term to  maturity.  The  conversion  prices are (i) $0.30 on or
before  the first  anniversary  of the  debenture;  (ii)  $0.35 on or before the
second  anniversary  of  the  debenture;   and  (iii)  $0.40  after  the  second
anniversary of the issuance of the debenture and maturity. The conversion prices
are subject to adjustment solely for capital reorganization events.

                                       19


                                     PART I

ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND PLAN OF
         OPERATION

     SDI is a less-than-lethal  defense technology company,  specializing in the
development of innovative next generation solutions for security situations that
do not require the use of lethal force,  or ammunition.  SDI is currently in the
advanced  stages of deploying  their patent  pending  family of products.  These
products consist of; the Blunt Impact Projectile 40mm (BIP40),  and the Wireless
Electric Projectile 40mm (WEP40). The market sectors for these products include;
the military,  army, navy, air force,  peacekeeping,  homeland security, and law
enforcement professionals. SDI's products were designed for use in existing 40mm
grenade launchers, and standard issue riot guns.

     The BIP40 is a direct impact  less-than-lethal  ammunition round. Developed
to respond to the increasing demand for security solutions in circumstances that
do  not  require  lethal  force  to  control.   Patented  technology  allow  for
operational  effectiveness  at  distances  of up to 262 feet (80m),  while still
enhancing target safety if engaged from close range.

     The  BIP40  operates  with  smokeless  powder  as  a  propellant,  ensuring
consistent velocity and accuracy at long distances.  The head of the round has a
collapsible nose that absorbs the kinetic energy upon impact.  The Company holds
a global patent for the collapsible nose.

     Designed to supersede  previous blunt impact solutions such as foam, baton,
sponge and rubber  bullets,  the BIP40's  technology  enables the  projectile to
engage the target with higher  kinetic energy while meeting  official,  military
standard requirements.

     The WEP40 is an electric  ammunition round that was developed to answer the
growing  need for an  effective,  extended  range  incapacitation  solution  for
situations that do not require the use of lethal force to control. Incorporating
SDI's patented and patent-pending  technologies allows for this ammunition round
to deliver operational success at distances up to feet 160 feet (50m).

     The market sectors for these products  include;  the military,  army, navy,
air force,  peacekeeping,  homeland security, and law enforcement professionals.
The WEP40 when  deployed  emits a  Wireless  Electro  Neuro-Muscular  Disruption
Technology that  incapacitates the targeted  individual.  The Company's products
were designed for a standard 40mm ammunition casing, for use with standard issue
weapons such as riot guns and M203 grenade launchers.

     SDI  has  received  a  Letter  of  Intent  (LOI)  from a  distributor  that
represents   an   interested   Country  to  obtain  a  large   number  of  SDI's
less-than-lethal  ammunition.  SDI and the end user  Country will be testing the
Company's ammunition in the summer of 2011 for assessment purposes.

     The Company has been in talks with  several  military  and law  enforcement

                                       20


groups this quarter in regards to live demonstrations of SDI's  less-than-lethal
products.  SDI will be  demonstrating  to these  groups  in the  summer of 2011,
looking to obtain sales orders of their products.

     During the three months ended May 31, 2011 the Company  issued  convertible
notes for borrowings in the principal amount of $196,500.

     Subsequent to May 31, 2011,  the Company  raised an additional  $210,000 by
issuance of convertible  debentures.  The Debentures  accrue  interest at 8% per
annum.  The  principal  is payable at maturity  whereas the  interest is payable
annually in arrears on each  anniversary of the issuance date. The principal may
be  converted  in  multiples  of $1,000 into  common  stock at the option of the
Investor at any time during the term to maturity.  The conversion prices are (i)
$0.30 on or before  the first  anniversary  of the  debenture;  (ii) $0.35 on or
before the second anniversary of the debenture; and (iii) $0.40 after the second
anniversary of the issuance of the debenture and maturity. The conversion prices
are subject to adjustment solely for capital reorganization events.

     The Company has signed a Memorandum  of  Understanding  (MOU) with a large,
global  defense  technology  company.  The MOU maps out the  intentions  of both
groups to move  forward  in having  SDI's  40mm Blunt  Impact  ammunition  round
manufactured at the facility of the global defense technology company. A further
definitive  business  agreement  will need to be executed  further  defining the
parties' roles.  The proposed  arrangement will enable SDI to produce and market
its next generation less-than-lethal ammunition products through this production
facility in the United States.  The MOU represents  SDI's first step in entering
the marketplace both internationally and in North America.

     Subsequent  to May 31,  2011,  SDI was  extended an  invitation  to a 2-day
military  workshop with top military  leaders from an interested  country.  Both
military and police agencies were present for this workshop.  The purpose of the
exhibition was to explore military products, including less-lethal products that
will assist the  country's  armed  forces in moving  forward in a  peace-keeping
format.  Representatives  of  SDI  displayed  the  Company's  Wireless  Electric
Projectile  ("WEP40")  ammunition,  and the Blunt  Impact  Projectile  ("BIP40")
less-lethal  ammunition.  There  was a large  amount of  interest  from both the
military and police groups to initiate a live demonstration in the coming weeks.

     SDI was  incorporated on March 1, 2005 and for the period from inception to
May 31, 2011 has not generated any revenue.

     During the three  months  ended May 31, 2011  compared to the three  months
ended May 31,  2010,  there were no research  and product  development  expenses
since the development of the Company's products was nearing completion.

     During the period from inception (March 1, 2005) through May 31, 2011 SDI's
operations used $9,958,189 in cash.  During this period SDI purchased $58,773 of
equipment and raised $10,083,150 from financing activities.

     SDI anticipates that its capital  requirements for the twelve-month  period
ending May 31, 2012 will be:

                                       21


      Development and Production costs              $120,000
      General and Administrative Expenses           $550,000
                                                  ----------
                  Total                             $670,000
                                                  ==========

     Other than the foregoing,  SDI did not have any material future contractual
obligations or off balance sheet arrangements as of May 31, 2011.

     SDI does not have any  commitments  or  arrangements  from any  persons  to
provide SDI with any additional  capital it may need. Without additional capital
SDI will  not be able to fund  its  anticipated  capital  requirements  outlined
above.

     See Note 11 to the financial statements included as part of this report for
information concerning events which occurred subsequent to May 31, 2011.

Item 4.     Controls and Procedures.

     (a) SDI  maintains a system of controls and  procedures  designed to ensure
that  information  required to be disclosed in reports filed or submitted  under
the  Securities  Exchange Act of 1934,  as amended  ("1934  Act"),  is recorded,
processed,  summarized and reported,  within time periods specified in the SEC's
rules and forms and to ensure that  information  required to be disclosed by SDI
in the reports that it files or submits under the 1934 Act, is  accumulated  and
communicated to SDI's management,  including its Principal Executive Officer and
Principal  Financial Officer, as appropriate to allow timely decisions regarding
required  disclosure.  As of May 31, 2011, SDI's Principal Executive Officer and
Principal  Financial  Officer  evaluated  the  effectiveness  of the  design and
operation of SDI's disclosure controls and procedures. Based on that evaluation,
SDI's Principal Executive Officer and Principal Financial Officer concluded that
SDI's disclosure controls and procedures were effective.

     (b) Changes in Internal  Controls.  There were no changes in SDI's internal
control over  financial  reporting  during the quarter ended May 31, 2011,  that
materially affected, or are reasonably likely to materially affect, its internal
control over financial reporting.

                                       22



                                     PART II

Item 2.  Unregistered Sales of Equity Securities and Use of Proceeds

     Not applicable.


Item 6.  Exhibits

Exhibits

  31.1            Certification  pursuant to Section 302 of the Sarbanes-Oxley
                  Act of 2002 for Gregory Sullivan.

  31.2            Certification  pursuant to Section 302 of the Sarbanes-Oxley
                  Act of 2002 for Rakesh Malhotra.

  32              Certification  pursuant to Section 906 of the Sarbanes-Oxley
                  Act of 2002 for Gregory Sullivan and Rakesh Malhotra.

                                       23


                                   SIGNATURES


     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.


                                      SECURITY DEVICES INTERNATIONAL, INC.

Date:  July 15, 2011
                                      By: /s/ Gregory Sullivan
                                          -----------------------------------
                                          Gregory Sullivan, President and
                                          Principal Executive Officer



Date:  July 15, 2011
                                      By: /s/ Rakesh Malhotra
                                          -----------------------------------
                                          Rakesh Malhotra, Principal
                                          Financial and Accounting Officer

                                       24