EXHIBIT 4.8
                                                                     -----------


THIS NOTE AND THE SHARES OF CAPITAL STOCK ISSUABLE UPON ANY CONVERSION HEREOF
HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
"SECURITIES ACT"), OR ANY APPLICABLE STATE SECURITIES LAWS AND MAY NOT BE SOLD
OR OTHERWISE TRANSFERRED BY ANY PERSON, INCLUDING A PLEDGEE, UNLESS (1) EITHER
(A) A REGISTRATION WITH RESPECT THERETO SHALL BE EFFECTIVE UNDER THE SECURITIES
ACT, OR (B) THE COMPANY SHALL HAVE RECEIVED AN OPINION OF COUNSEL OF THE HOLDER
SATISFACTORY TO THE COMPANY THAT AN EXEMPTION FROM REGISTRATION UNDER THE
SECURITIES ACT IS AVAILABLE, AND (2) SUCH TRANSFER WOULD BE IN COMPLIANCE WITH
ALL APPLICABLE STATE SECURITIES LAWS. THERE IS NO AND THERE IS NOT EXPECTED TO
BE A PUBLIC MARKET FOR THIS NOTE AND THE SHARES OF CAPITAL STOCK ISSUABLE UPON
ANY CONVERSION HEREOF. INVESTORS SHOULD BE AWARE THAT THEY WILL BE REQUIRED TO
BEAR THE FINANCIAL RISKS OF THIS INVESTMENT FOR AN INDEFINITE PERIOD OF TIME.


                              LOCATEPLUS.COM, INC.

                    CONVERTIBLE SUBORDINATED PROMISSORY NOTE


$[_________]                                              BEVERLY, MASSACHUSETTS
                                                             [_______________]

LocatePLUS.com, Inc., a Delaware corporation (the "Company"), for value
received, hereby promises to pay to [________________] and Investigations or his
assigns the principal sum of [________________]($[________________]), together
with interest compounding semi-annually on each January 1 and July 1 from the
date hereof on the unpaid balance of such principal amount from time to time
outstanding at the rate of 14% per annum until paid in full or converted as
provided herein. Subject to the provisions of Section 4 below, all outstanding
principal and accrued unpaid interest under this Note shall be due and payable
on the first to occur of: (I) September 27, 2005, (II) conversion according to
the terms hereof, and (III) the occurrence of an Event of Default (as defined in
Section 3 below) (the first to occur of (i), (ii) and (iii), is referred to
herein as the "Maturity Date").

SECTION 1.  CONVERSION.

     (A)  AUTOMATIC CONVERSION. The entire outstanding principal amount of this
Note and any accrued unpaid interest hereon shall automatically be converted
into fully paid and non-assessable shares of the Common Stock, par value $0.01,
of the Company upon the first to occur (the "Conversion Date") of:

          (I) LocatePLUS.com's initial public offering of securities registered
     on Form S-1 or its then equivalent;

          (II) the closing of at least a $5 million equity investment in the
     Company in an offering subsequent to the Company's Note and Warrant
     Offering that commenced on September 27, 2000; or

          (III) a transaction involving a "Change of Control" of the Company.
     For the purposes of this Note, a "Change of Control" transaction shall mean
     (1) a transaction in which any individual, entity or group (within the
     meaning of Sections 13(d)(3) and

     14(d)(2) of the Securities Exchange Act of 1934, as amended (the "Exchange
     Act") acquires beneficial ownership of any capital stock of the Company if,
     after such acquisition, such individual, entity or group beneficially owns
     (within the meaning of Rule 13d-3 promulgated under the Exchange Act) more
     than 50% of either (X) the then-outstanding shares of Common Stock of the
     Company (the "Outstanding Company Common Stock"), or (Y) the combined
     voting power of the then-outstanding securities of the Company generally
     entitled to vote (the "Outstanding Company Voting Securities"); PROVIDED,
     HOWEVER, that for the purposes of this clause (1), no acquisition by any
     person, entity, or group pursuant to a Business Combination, as defined
     below, which complies with clauses (x) and (y) of clause (2) below will
     constitute a Change of Control; or (2) the consummation of a merger,
     consolidation, reorganization, recapitalization or statutory share exchange
     involving the Company or a sale or other disposition of all or
     substantially all of the assets of the Company (a "Business Combination"),
     unless, immediately after such Business Combination, each of the following
     is satisfied: (X) all or substantially all of the individuals or entities
     who were beneficial owners of the Outstanding Company Stock and Outstanding
     Company Voting Securities immediately prior to that Business Combination
     beneficially own, directly or indirectly, more than 50% of the
     then-outstanding shares of the Company's Common Stock and the combined
     voting power of the then-outstanding securities generally entitled to vote,
     respectively, of the resulting or acquiring entity in the Business
     Combination (which shall include, without limitation, an entity that as a
     result of such transaction owns the Company or substantially all of the
     Company's assets either directly or through one or more subsidiaries) (such
     resulting or acquiring entity is referred to herein as the "Acquiring
     Entity"), in substantially the same proportions as their ownership of the
     Outstanding Company Common Stock and Outstanding Company Voting Securities,
     respectively, immediately prior to such Business Combination (it being
     understood that for purposes of the determination of whether or not such
     voting power of the then-outstanding securities is owned, directly or
     indirectly, in substantially the same proportions as the ownership of the
     Outstanding Company Common Stock and Outstanding Company Voting Securities,
     respectively, any securities transferred pursuant to transfers by a
     security holder which is an entity to a wholly-owned subsidiary of that
     entity, or by a security holder which is a closely held partnership PRO
     RATA to the partners of such partnership, or transfers by a limited
     liability company PRO RATA to the members of such limited liability company
     shall be disregarded, and (Y) no person or entity (excluding the Acquiring
     Entity or any employee benefit plan (or related trust) maintained or
     sponsored by the Company or by the Acquiring Entity) beneficially owns,
     directly or indirectly, more than 50% of the then-outstanding equity of the
     Acquiring Entity, or of the combined voting power of the then-outstanding
     securities of such corporation generally entitled to vote (except to the
     extent that such ownership existed prior to the Business Combination).

          (IV) Upon conversion of this Note, the Holder shall be entitled to a
     number of shares of LocatePLUS.com, Inc. Common Stock as may be determined
     as set forth below:

               (A) If the conversion is triggered by clauses (i) or (ii), above,
          then the per share Conversion Price shall be 80% of the per share
          offering price of Common Stock in that offering (if the offering
          consists primarily of Common Stock), or (if the offering does not
          consist primarily of Common Stock), the Conversion Price shall be the
          80% of the per share value of the Common Stock as determined by the
          Board of Directors of the Company, in good faith, with reference to
          such offering price.



                                       -2-

               (B) If the conversion is triggered by clause (iii), above, in a
          transaction in which all or substantially all of the Common Stock of
          the Company is acquired or transferred as a result of a merger or
          tender offer, the consideration for which consists of cash and/or
          readily marketable, unrestricted securities, then the per share
          Conversion Price will be 80% of the value of the consideration offered
          to each stockholder for each share of the Company's Common Stock.

               (C) If the conversion is triggered by clause (iii), above, in a
          change of control transaction other than as set forth in paragraph
          (B), above, then the per share Conversion Price shall be 80% of the
          implied per share value of Common Stock of such transaction, as
          determined by the Board of Directors in good faith taking into account
          the transaction, the nature of the consideration, the relative
          liquidity of the consideration, and other similar factors regularly
          used in the valuation of illiquid investments.

     (B)  FRACTIONAL SHARES. No fractional shares of capital stock of the
Company shall be issued upon conversion of this Note. In lieu of any fractional
shares to which the holder would otherwise be entitled, the Company shall pay
cash equal to the amount that would have been applied to the purchase of such
fractional share but for the application of the preceding sentence.

     (C)  MECHANICS OF CONVERSION. The Company shall use its best efforts to
cause notice of conversion to be mailed to the registered holder of this Note,
at such holder's address appearing in the records of the Company, at least five
business days prior to the Conversion Date. Upon notice by the Company and on or
before the Conversion Date, the holder shall surrender this Note for conversion
at the place designated in such notice. If required by the Company, the Note
surrendered for conversion shall be endorsed or accompanied by a written
instrument or instruments of surrender in form satisfactory to the Company duly
executed by the registered holder. The Company shall, as soon as practicable
after the Conversion Date, issue and deliver to such holder of this Note, a
certificate or certificates for the number of shares of the capital stock of the
Company to which such holder shall be entitled, together with cash in lieu of
any fraction of a share. Immediately upon the Conversion Date (whether or not
this Note is surrendered), this Note shall no longer be deemed to be outstanding
and all rights with respect to this Note shall immediately cease and terminate
on such Conversion Date, except only the right of the holder to receive the
shares of the capital stock of the Company to which he is entitled as a result
of the conversion on the Conversion Date.

     2.   RESTRICTIONS ON TRANSFER. The shares of the capital stock of the
Company into which the Note may be converted, shall not be assigned, sold,
pledged, transferred or otherwise disposed of except in compliance with the
Securities Act of 1933, as amended (the "Securities Act"), and applicable state
securities laws.

     3.   DEFAULT. This Note and all amounts due hereunder shall become
immediately due and payable in cash without notice or demand, at any time, upon
the occurrence and during the continuation of any of the following events of
default (individually, "an Event of Default" and collectively, "Events of
Default"):







                                       -3-

          (A)  Default in the payment when due of any principal or interest
     under this Note;

          (B)  The liquidation, termination of existence, dissolution or the
     appointment of a receiver or custodian for the Company or any part of its
     property if such appointment is not terminated or dismissed within thirty
     days;

          (C)  The institution against the Company of any proceedings under the
     United States Bankruptcy Code or any other federal or state bankruptcy,
     reorganization, receivership, insolvency or other similar law affecting the
     rights of creditors generally, which proceeding is not dismissed within
     thirty days of filing; or

          (D)  The institution by the Company of any proceedings under the
     United States Bankruptcy Code or any other federal or state bankruptcy,
     reorganization, receivership, insolvency or other similar law affecting the
     rights of creditors generally or the making by the Company or any endorser
     or guarantor of this Note of a composition of an assignment or trust
     mortgage for the benefit of creditors.

Upon the occurrence of an Event of Default, the holder shall have then, or at
any time thereafter, all of the rights and remedies afforded by the Uniform
Commercial Code as from time to time in effect in the State of Delaware.

     4.   SUBORDINATION. The indebtedness evidenced by this Note is subordinate
and junior to the prior payment in full of the principal of (and premium, if
any) and interest on all Senior Indebtedness. "Senior Indebtedness" means the
principal of (and premium, if any) and interest on all indebtedness of the
Company for money borrowed from banks and other institutional lenders, whether
outstanding on the date hereof or hereafter arising. Nothing contained in this
Section 4 shall limit or impair the conversion of this Note in accordance with
Section 1 hereof. Anything herein to the contrary notwithstanding, the Company
covenants and agrees, and any holder hereof by its acceptance hereof covenants
and agrees, expressly for the benefit of the present and future holders of the
Senior Indebtedness, that until the Senior Indebtedness shall have been paid in
full, the holder hereof will not take, demand or receive, and the Company will
not make, give or permit, directly or indirectly, by set-off, redemption,
purchase or in any other manner, any payment of the whole or any part hereof,
except that the holder hereof shall be entitled to receive payments of interest
and principal on the Maturity Date unless and until (if ever) the holder of any
Senior Indebtedness shall have given notice to the holder hereof (a "Standstill
Notice") that (I) the Company is in default in respect of any payment of
principal of, interest on, or other amount due in connection with any Senior
Indebtedness, or (II) an event has occurred and is continuing or a condition
exists which entitles any holder of the Senior Indebtedness to declare the same
to be due and payable prior to its express maturity date, PROVIDED that the
Company may make, and the holder hereof may take, demand, receive, enforce and
collect such payments of principal and interest after the period ending on the
first to occur of (A) the date such event or condition is waived or cured, and
(B) with respect to a non-payment default, one hundred and eighty days after the
date the Standstill Notice shall have been given to the holder hereof, UNLESS
there shall then exist a payment default in respect of the Senior Indebtedness
in which case the Company shall not make and the holder shall not accept, any
payment hereunder until such payment default has been cured. Each holder hereof,
by its acceptance of this Note, hereby agrees that the holder of the Senior
Indebtedness may, at any time and from time to time, without notice to the
holder of this Note, without releasing or impairing the subordination contained
herein, change the manner, place or terms of payment, or change or extend the
time for payment of or renew or alter, the Senior Indebtedness, or amend or
supplement in any manner the agreements, instruments or documents relating to,
evidencing or securing the Senior Indebtedness, or release any person liable in

                                       -4-

any manner for the payment or collection of the Senior Indebtedness or exercise
or refrain from exercising any rights in respect of the Senior Indebtedness or
apply any monies or other property received to the Senior Indebtedness or accept
or release any security for the Senior Indebtedness. Upon the liquidation,
dissolution or other winding up of the Company or any sale of the Company,
receivership, insolvency, reorganization or bankruptcy proceedings, assignment
for the benefit of creditors, arrangement or the commencement of any proceeding
for the benefit of creditors, against the Company for any relief under any
bankruptcy, reorganization or insolvency laws or any other law of the relief of
debtors or the readjustment of indebtedness or other event or condition
described in this Section 4, then and in any such event, any payment of
principal, interest or premium on this Note which but for the subordination
provisions of this Note would otherwise be payable or deliverable to the holder
hereof shall instead be paid over or delivered to the holder of the Senior
Indebtedness (if more than one holder, in accordance with any agreements among
the holder of such Senior Indebtedness) for application as a payment or
prepayment on account of the Senior Indebtedness, and the holder hereof shall
not receive any payment therefrom unless and until all Senior Indebtedness shall
have been fully paid and satisfied or the holder of such Senior Indebtedness
shall have otherwise consented. If any holder hereof shall receive any payment
in respect of this Note in violation of the preceding, such holder, by its
acceptance hereof, hereby agrees to hold such payment in trust for the PRO RATA
benefit of the holder of the Senior Indebtedness and to pay over such amount in
the form received, except for the endorsement without recourse or warranty of
the holder hereof where appropriate, to the holder of the Senior Indebtedness
for application on account of the Senior Indebtedness. THE SUBORDINATION
PROVISIONS HEREOF ARE AND ARE INTENDED TO BE SOLELY FOR THE PURPOSE OF DEFINING
THE RELATIVE RIGHTS OF THE HOLDER HEREOF AND THE HOLDER OF THE SENIOR
INDEBTEDNESS AND NOTHING CONTAINED HEREIN IS INTENDED TO OR SHALL IMPAIR, AS
BETWEEN THE COMPANY, ITS CREDITORS AND THE HOLDER OF THIS NOTE, THE OBLIGATION
OF THE COMPANY, WHICH IS UNCONDITIONAL AND ABSOLUTE, TO PAY TO THE HOLDER OF
THIS NOTE THE PRINCIPAL OF, AND INTEREST ON, THIS NOTE AS AND WHEN THE SAME
SHALL BECOME DUE AND PAYABLE IN ACCORDANCE WITH THE TERMS HEREOF, OR IS INTENDED
TO OR SHALL AFFECT THE RELATIVE RIGHTS OF THE HOLDER OF THIS NOTE AND CREDITORS
OF THE COMPANY (OTHER THAN THE HOLDER OF THE SENIOR INDEBTEDNESS), NOR SHALL
ANYTHING HEREIN PREVENT THE HOLDER HEREOF FROM EXERCISING ALL RIGHTS AND
REMEDIES UNDER THIS NOTE IN THE EVENT OF DEFAULT HEREUNDER, SUBJECT TO THE RIGHT
OF THE HOLDER OF THE SENIOR INDEBTEDNESS TO RECEIVE PRIOR PAYMENT IN FULL OF
SUCH SENIOR INDEBTEDNESS. Notwithstanding the foregoing, the holder of this Note
shall not commence any action for the payment of any principal, interest or
other amount due hereunder unless (I) any Senior Indebtedness shall have been
accelerated, or (II) the Company has become subject to an insolvency,
reorganization or bankruptcy proceeding, receivership proceeding, assignment for
the benefit of creditors or other like proceeding. The holder hereof
acknowledges that his, her or its intention is that the rights of the holder
hereof to payments of principal and interest on this Note shall be junior and
subordinate to the rights of the holder of any present or future Senior
Indebtedness, and the holder hereof hereby agrees to confirm the foregoing and
to execute any and all such documents as may be reasonably requested by the
holder of any Senior Indebtedness from time to time.

     5.   INVESTMENT INTENT. The holder of this Note, by acceptance hereof,
warrants and represents that this Note and any security issuable upon conversion
hereof, has been and will be acquired for investment only and not with a view
to, or for sale in connection with, a distribution thereof and not with a view
to their resale, and that this Note and any security issuable upon conversion
hereof has been and will be acquired for the holder's own account and not with a
view to their division among others, and that no other person has any direct or
indirect beneficial interest in this Note or any security issuable upon
conversion hereof.


                                       -5-

     6.   NOTICES. All notices given hereunder shall be in writing and delivered
in person, by recognized courier service, or by postage prepaid certified or
registered mail, return receipt requested. All notices intended for the holder
hereof shall be addressed to it as its last address as it shall then appear on
the books of the Company. All notices intended for the Company shall be
addressed to it at 100 Cummings Center, Suite 235-M, Beverly, Massachusetts
01915. Said addresses may be changed by notice in accordance with this Section
6.

     7.   GOVERNING LAW. This Note shall be governed by and construed in
accordance with the laws of the State of Delaware.

     8.   GENERAL.

     (A)  SUCCESSORS AND ASSIGNS. This Note, and the obligations and rights of
the Company hereunder, shall be binding upon and inure to the benefit of the
Company, the holder of this Note, and their respective heirs, successors and
permitted assigns.

     (B)  RECOURSE. Recourse under this Note shall be to the general unsecured
assets of the Company only, and in no event to the officers, directors or
stockholders of the Company.

     (C)  CHANGES. Changes in or additions to this Note may be made or
compliance with any term, covenant, agreement, condition or provision set forth
herein may be omitted or waived (either generally or in a particular instance
and either retroactively or prospectively) only with the written consent of the
Company and the holder of this Note.

     (D)  RIGHTS RESERVED. No provisions of this Note and no right or option
granted or conferred herein shall in any way limit, affect or abridge the
exercise by the Company of any of its corporate rights or powers, including
without limitation, its corporate right and power to issue securities,
recapitalize, amend its Certificate of Incorporation, reorganize, consolidate or
merge with or into another corporation, or transfer or encumber all or any part
of its property or assets.

     IN WITNESS WHEREOF, this Note has been executed and delivered as a sealed
instrument on the date first above written.

                                       LOCATEPLUS.COM, INC.

                                       By:
                                           -------------------------------------
                                           Jon Latorella
                                           President and Chief Executive Officer



                                       By:
                                           -------------------------------------
                                           Robert Goddard
                                           Treasurer, Secretary and
                                           Chief Financial Officer


TRACKING NUMBER [________________].



                                       -6-