U.S. WIRELESS DATA, INC.

                              ARTICLES OF AMENDMENT

                                       TO

                            ARTICLES OF INCORPORATION

     FIRST: That the name of the Corporation is U.S. Wireless Data, Inc.

     SECOND:  That the text of the  Articles  of  Amendment  to the  Articles of
Incorporation  of the  Corporation  determining the  designations,  preferences,
limitations  and relative rights of the Series C Preferred Stock is set forth on
Exhibit 1 attached hereto and incorporate herein by reference.

     THIRD: That the Amendment was adopted on March 9, 2000.

     FOURTH:  That the  Amendment  was duly adopted by the Board of Directors of
the Corporation.

     IN WITNESS WHEREOF,  U.S.  Wireless Data, Inc. has caused these Articles of
Amendment to be duly executed this 9th day of March, 2000.

                                      U.S. Wireless Data, Inc.


                                      By:  /s/ Charesls I. Leone
                                         ---------------------------------------
                                          Name:  Charles I. Leone
                                          Title: Chief Financial Officer, Chief
                                                 Operating Officer and Secretary
ATTEST:


/s/ Dean M. Leavitt
- --------------------------------
Name:   Dean M. Leavitt
Title:  Chief Executive Officer








                                    EXHIBIT 1

                                 DESIGNATION OF
                      SERIES C CONVERTIBLE PREFERRED STOCK
                           OF U.S. WIRELESS DATA, INC.


     U.S.  Wireless  Data,  Inc., a Colorado  corporation  (the  "Corporation"),
hereby designates the preferences, limitations and relative rights of its Series
C Convertible Preferred Stock.

1.   Designation.

     Six Million Five Hundred Thousand  (6,500,000)  shares of the Corporation's
15,000,000  total  authorized  shares of no par value preferred stock are hereby
designated as Series C Convertible  Preferred Stock (hereinafter  referred to as
the "Series C Preferred Stock").

2.   Stated Value.

     The Series C Preferred  Stock shall have a stated value of one cent ($0.01)
per share.

3.   Voting Rights.

     3.1 Except as otherwise  provided  below or as required by law, the holders
of Series C  Preferred  Stock  will be  entitled  to notice  of any  meeting  of
shareholders  of the  Corporation  or any  action  to be taken  by  shareholders
without a meeting,  and shall be entitled to one vote per share of Common  Stock
issuable upon  conversion of the Series C Preferred  Stock as of the record date
for any such vote on all  matters  submitted  to a vote of  stockholders  of the
Company, and the holders of Series C Preferred Stock will vote as a single class
with the holders of Common  Stock on all matters,  except as otherwise  required
under applicable law.

     3.2 Except as  otherwise  required by law or  provided  by the  Articles of
Incorporation,  a majority of the shares entitled to vote, represented in person
or by proxy,  will constitute a quorum at a meeting of  shareholders;  provided,
that,  for action upon any matter as to which  holders of shares are entitled to
vote as a class,  a majority of the shares of such class,  represented in person
or by proxy, will constitute a quorum.

     3.3 The holders of the Series C Preferred Stock will be entitled, voting as
a separate class, to elect two directors and the holders of Common Stock will be
entitled to elect the balance of the directors.

     3.4 Any  director  elected  solely by the holders of the Series C Preferred
Stock or of the Common Stock, as the case may be, may be removed, either with or
without  cause,  by,  and only by,  the  affirmative  vote of the  holders  of a
majority of a quorum of the shares of the Series C Preferred Stock or a majority
of a quorum of the shares of the Common  Stock,  as the case may be, either at a
special meeting of such shareholders duly called for that purpose or pursuant to
a written consent of shareholders,  and any vacancy thereby created or otherwise
resulting  may be filled by, and only by, the  holders of the Series C Preferred
Stock or the Common Stock, as the case may be.

                                        1





4.  Dividends.  If any dividend is declared on the Common Stock,  the holders of
the Series C Preferred  Stock will be entitled to receive  dividends  pari passu
out of legally available funds as if each such share of Series C Preferred Stock
had been  converted  to Common  Stock.  No dividend  shall be paid on the Common
Stock at a rate greater than the rate at which  dividends are paid on the Series
C Preferred  Stock (based on the number of shares of Common Stock into which the
Series C Preferred  Stock is  convertible on the date the dividend is declared).
Dividends on the Series C Preferred Stock will be noncumulative.

5.   Liquidation Preference.

     5.1 In the  event of the  liquidation,  dissolution  or  winding  up of the
Corporation,  either  voluntary  or  involuntary,  the  holders  of the Series C
Preferred  Stock  will  be  entitled  to  receive  out  of  the  assets  of  the
Corporation,  for each  share of  Series C  Preferred  Stock  then held by them,
first,  prior and in preference to any distribution to the holders of the Common
Stock or any  subsequently  issued series of preferred stock, an amount equal to
$10.00 per share plus any accrued and unpaid dividends  ("Liquidation Value," as
appropriately  adjusted  for  stock  splits  and  combinations).   If  upon  the
occurrence of such event, the assets and funds available for distribution  among
the holders of the  Preferred  Stock are  insufficient  to permit the payment to
such holders of the full  preferential  amount provided  above,  then the entire
assets and funds of the Corporation  legally  available for  distribution to the
holders  of Series C  Preferred  Stock  will be  distributed  ratably  among the
holders of Series C Preferred  Stock in proportion to the shares of the Series C
Preferred Stock held by each such holder weighted by the respective  Liquidation
Value.  After  payment  has been made to the  holders of the Series C  Preferred
Stock of the full  amounts  to which they will be  entitled  as  aforesaid,  any
remaining assets will be distributed to the holders of the  Corporation's  other
equity securities.

     5.2 A  liquidation,  dissolution  or  winding up for the  purposes  of this
Section 5 includes a (i) merger or consolidation of the Corporation with or into
any other corporation or corporations  where the shareholders of the Corporation
immediately  prior to such event do not retain more than a 50% voting  power and
interest in the successor  entity and (ii) sale of all or  substantially  all of
the assets of the Corporation (collectively, a "Merger or Sale").

     5.3 No later than 20 days  before the  consummation  of any Merger or Sale,
the  Corporation  shall  deliver a notice to each  holder of Series C  Preferred
Stock  setting  forth the  principal  terms of such Merger or Sale.  Such notice
shall  include a  description  of the  amounts  that would be paid to holders of
Series C Preferred Stock under this Section 5 and of the consideration that such
holders  would  receive if they  exercised  their rights under Section 6 to have
shares of Series C Preferred Stock converted into Common Stock.

     5.4 No later than ten days after  delivery  of the  notice,  each holder of
Series C Preferred  Stock may deliver an election to the  Corporation  notifying
the  Corporation  that the holder desires that such holder's  shares of Series C
Preferred  Stock be converted into shares of Common Stock and, if no such notice
is  delivered,  such holder shall receive such amounts as are provided for under
this Section 5.

     5.5 Each holder of an outstanding  share of Series C Preferred  Stock shall
be  deemed  to  have  consented  to  distributions  made by the  Corporation  in
connection  with the repurchase at cost (or such other price as may be agreed to
by the Corporation's  Board of Directors) of shares of Common Stock issued to or
held by officers,  directors or employees of, or consultants to, the Corporation
or its subsidiaries upon termination of their employment or services pursuant to
agreements  (whether now existing or hereafter  entered into)  providing for the
right of said repurchase between the Corporation and such persons.

6.   Conversion Rights.

     6.1 Right to Convert. Notwithstanding any other term or provision contained
herein,  no shares of Series C Preferred  Stock shall  become  convertible  into
Common Stock under any  circumstances  until the shareholders of the Corporation
shall have approved an amendment to the Corporation's  Articles of Incorporation
increasing  the number of authorized  shares of Common Stock to a number that is
sufficient  (given all other Common Stock share  reservations)  to allow for due
and proper reservation of a sufficient number of shares of Common Stock to allow
for the conversion of the Series C Preferred Stock.

                                        2




          (a) Optional  Conversion.  Each share of Series C Preferred Stock will
be  convertible,  at the  option of the  holder  thereof,  at the  office of the
Corporation  or any  transfer  agent for the Series C  Preferred  Stock,  into a
number of shares of Common Stock as determined  in  accordance  with Section 6.3
hereof.

          (b) Automatic  Conversion of Series C Preferred  Stock.  Each share of
Series C Preferred Stock will  automatically  convert into a number of shares of
Common Stock as determined in accordance with Section 6.3 hereof:

               (i)  immediately  upon  the  closing  of the sale  pursuant  to a
registration  statement  under the  Securities  Act of 1933,  as amended,  for a
public  offering  (other than a registration on Form S-8, Form S-4 or comparable
forms) of the  Corporation's  securities  which results in gross proceeds to the
Corporation of not less than $30,000,000; or

               (ii)  commencing  three months  after the Initial  Closing of the
Series C Preferred  Stock,  if the average closing bid price of the Common Stock
exceeds 300% of the Conversion Price for 20 consecutive trading days.

     6.2  Mechanics  of  Conversion.  Upon  conversion,  the  holder of Series C
Preferred Stock will surrender the certificate or  certificates  therefor,  duly
endorsed,  at the office of the  Corporation  or of any  transfer  agent for the
Series C  Preferred  Stock,  and such  holder  will give  written  notice to the
Corporation  stating  the  name  or  names  in  which  such  holder  wishes  the
certificate or certificates  for shares of Common Stock to be issued;  provided,
however,  that the  Corporation  shall not be  required  to issue the  shares of
Common  Stock in a name other than that of the holder of the Series C  Preferred
Stock being converted  unless it can do so in conformance  with applicable laws.
The Corporation,  as soon as practicable  thereafter,  will issue and deliver at
such  office  to such  holder of Series C  Preferred  Stock or to such  holder's
nominee or nominees,  a certificate or certificates  for the number of shares of
Common Stock to which such holder will be entitled as aforesaid.  Any conversion
will be deemed to have been made  immediately  prior to the close of business on
the date of the  event of  conversion,  in the  event  of  automatic  conversion
hereunder,  or, in the event of voluntary  conversion,  immediately prior to the
close  of  business  on the  date  when  the  Corporation  receives  a  holder's
certificate or certificates for Series C Preferred Stock and any other documents
or  instruments  required  hereunder  or by  applicable  law,  and the person or
persons  entitled to receive the shares of Common Stock issuable upon conversion
will be treated for all purposes as the record  holder or holders of such shares
of Common Stock on such date.

     6.3  Conversion  Rate.  Each  share of  Series C  Preferred  Stock  will be
convertible into the number of shares of Common Stock determined by dividing (i)
the  Liquidation  Value of the Series C  Preferred  Stock by (ii) $1.00 (as such
conversion price may be adjusted, the "Conversion Price").

     6.4 Adjustment for Reorganization, Reclassification,  Consolidation, Merger
or Sale. If any capital  reorganization or  reclassification of the Corporation,
or any  consolidation or merger of the Corporation  with another person,  or the
sale,  transfer  or lease of all or  substantially  all of its assets to another
person  shall be effected in such a way that  holders of shares of Common  Stock
shall be entitled to receive  stock,  securities or assets with respect to or in
exchange for their shares, then provision shall be made, in accordance with this
Section  6.4,  whereby the holder of Series C Preferred  Stock shall  thereafter
have the right to purchase and receive such  securities  or assets as would have
been issued and payable with respect to or in exchange for the aggregate  shares
of Common Stock  immediately  theretofore  purchasable  and receivable  upon the
exercise  of the  rights  represented  hereby  if  conversion  of the  Series  C
Preferred  Stock  had  occurred   immediately  prior  to  such   reorganization,
reclassification, consolidation, merger or sale. The Corporation will not effect
any such  consolidation,  merger,  sale,  transfer or lease  unless prior to the
consummation  thereof  the  successor  entity  (if other  than the  Corporation)
resulting from such  consolidation or merger or the entity purchasing or leasing
such assets shall assume by written instrument the obligation to deliver to such
holder of Series C Preferred  Stock such  securities or assets as, in accordance
with the foregoing  provisions,  such holder of Series C Preferred  Stock may be
entitled to purchase.  The provisions of this Section 6.4 shall  similarly apply
to successive consolidations, mergers, exchanges, sales, transfers or leases.

                                        3




     6.5 Adjustment for Stock Dividends and Securities Distributions. If, at any
time or from time to time after March 10, 2000, the Corporation shall distribute
to the holders of shares of Common Stock (i)  securities,  (ii) property,  other
than cash, or (iii) cash, without fair payment therefor,  then, and in each such
case,  the holder of Series C Preferred  Stock,  upon the conversion of Series C
Preferred Stock, shall be entitled to receive such securities, property and cash
which the  holder of Series C  Preferred  Stock  would  hold on the date of such
conversion if, on the date thereof,  the holder of Series C Preferred  Stock had
been the  holder of  record of the  shares  of  Common  Stock  issued  upon such
conversion  and, during the period from March 10, 2000 to and including the date
of such conversion, had retained such shares of Common Stock and the securities,
property and cash  receivable  by the holder of Series C Preferred  Stock during
such  period,  subject,  however,  to the  holder  of Series C  Preferred  Stock
agreeing to any  conditions to such  distribution  as were required of all other
holders of shares of Common Stock in connection with such  distribution.  If the
securities  to be  distributed  by the  Corporation  involve  rights,  warrants,
options or any other form of convertible securities and the right to exercise or
convert such  securities  would expire in accordance with its terms prior to the
conversion of the Series C Preferred  Stock,  then the terms of such  securities
shall provide that such exercise or convertibility  right shall remain in effect
until  thirty  (30) days after the date the holder of Series C  Preferred  Stock
receives such securities pursuant to the exercise hereof.

     6.6  Other  Adjustments.  In  addition  to those  adjustments  set forth in
Sections  6.4 and 6.5, but without  duplication  of the  adjustments  to be made
under such Sections, if the Company:

          (a)  pays a dividend or makes a  distribution  on its Common  Stock in
               shares of its Common Stock;

          (b)  subdivides its outstanding  shares of Common Stock into a greater
               number of shares;

          (c)  combines  its  outstanding  shares of Common Stock into a smaller
               number of shares;

          (d)  makes a distribution on its Common Stock in shares of its capital
               stock other than Common Stock; and/or

          (e)  issues,  by  reclassification  of its Common Stock, any shares of
               its capital stock;

then the number and kind of shares of Common Stock issued upon conversion of the
Series C  Preferred  Stock  shall be  adjusted  so that the  holder  of Series C
Preferred Stock upon conversion shall be entitled to receive the kind and number
of shares of Common Stock or other securities of the Corporation that the holder
of Series C Preferred  Stock  would have owned or have been  entitled to receive
after the  happening  of any of the  events  described  above  had the  Series C
Preferred Stock been converted  immediately prior to the happening of such event
or any record date with respect  thereto.  An  adjustment  made pursuant to this
Section 6.6 shall become effective immediately after the record date in the case
of a dividend or distribution and shall become effective  immediately  after the
effective date in the case of a subdivision,  combination or issuance.  If, as a
result of an adjustment  made pursuant to this Section 6.6, the holder of Series
C Preferred Stock thereafter surrendered for conversion shall become entitled to
receive shares of two or more classes of capital stock or shares of Common Stock
and any other class of capital stock of the Corporation,  the Board of Directors
(whose  determination  shall be  conclusive  and shall be described in a written
notice  to  all  holders  of  Series  C  Preferred  Stock  promptly  after  such
adjustment)  shall  determine the  allocation of the adjusted  Conversion  Price
between or among  shares of such  classes  of capital  stock or shares of Common
Stock and such other class of capital  stock.  The  adjustment  to the number of
shares of Common Stock issuable upon the conversion of Series C Preferred  Stock
described  in this  Section  6.6 shall be made  each  time any  event  listed in
paragraphs (a) through (e) of this Section 6.6 occurs.


                                           4




     Simultaneously   with  all   adjustments  to  the  number  and/or  kind  of
securities,  property and cash to be issued in connection with the conversion of
the Series C Preferred  Stock,  the Conversion  Price will also be appropriately
and proportionately adjusted.

     6.7 Adjustment for Sale of Shares. In the event the Corporation at any time
issues  additional  Common  Stock,   preferred  stock,   options,   warrants  or
convertible  securities  after the Original  Issue Date,  other than  securities
currently  outstanding  as of March 10,  2000 or issued upon the  conversion  or
exercise of any securities outstanding as of March 10, 2000, at a purchase price
less than the then applicable Conversion Price for the Series C Preferred Stock,
then and in each such case,  the  Conversion  Price for the  Series C  Preferred
Stock will be automatically  reduced to such lower purchase price and the number
of shares  issuable upon  conversion of the Preferred  Shares shall be increased
proportionately ; provided,  however, that no adjustment to the Conversion Price
or the number of shares shall be made  pursuant to this Section 6.7 in the event
(i) the Company grants options to employees,  consultants, officers or directors
of the Company pursuant to contracts or plans approved by the Board of Directors
of the Company,  (ii) of the issuance of securities to a "strategic  partner" as
determined  by the Board of Directors  of the Company,  (iii) of the issuance of
securities  pursuant to a strategic  acquisition  as  determined by the Board of
Directors or (iv) of the  issuance of up to an  aggregate of 100,000  shares (as
appropriately adjusted for stock splits, stock dividends and similar adjustments
after the date hereof) of Common Stock (or convertible preferred stock, options,
warrants or other  securities  convertible into or exercisable for Common Stock)
at a purchase  price less than the Conversion  Price and not otherwise  excepted
pursuant to (i), (ii) or (iii) above.

          (a) For the purpose of making any adjustment in the  Conversion  Price
as provided in this Section 6.7, the  consideration  received by the Corporation
for any issue or sale of Common Stock will be computed:

               (i) to the  extent it  consists  of cash,  as the  amount of cash
received by the Corporation before deduction of any offering expenses payable by
the Corporation and any underwriting or similar  commissions,  compensation,  or
concessions  paid or allowed by the Corporation in connection with such issue or
sale;

               (ii) to the extent it consists of  property  other than cash,  at
the fair  market  value of that  property  as  determined  in good  faith by the
Corporation's Board of Directors; and

               (iii) if Common Stock is issued or sold together with other stock
or  securities  or other assets of the  Corporation  for a  consideration  which
covers  both,  as the  portion  of the  consideration  so  received  that may be
reasonably  determined in good faith by the Corporation's  Board of Directors to
be allocable to such Common Stock.

          (b) If the  Corporation  (i)  grants or sells any rights or options to
subscribe for,  purchase,  or otherwise  acquire shares of Common Stock, or (ii)
issues or sells any security  convertible into shares of Common Stock,  then, in
each case,  the price per share of Common Stock  issuable on the exercise of the
rights or options or the  conversion  of the  securities  will be  determined by
dividing (x) the total amount, if any, received or receivable by the Corporation
as consideration  for the granting or sale of the rights or options or the issue
or sale of the  convertible  securities,  plus the minimum  aggregate  amount of
additional consideration payable to the Corporation on exercise or conversion of


                                       5



the securities,  by (y) the maximum number of shares of Common Stock issuable on
the exercise of conversion. Such granting or issue or sale will be considered to
be an issue or sale for cash of the  maximum  number of  shares of Common  Stock
issuable on exercise or conversion at the price per share  determined under this
Section 6.7, and the Conversion  Price for the Series C Preferred  Stock will be
adjusted as above provided to reflect (on the basis of that  determination)  the
issue or sale. No further  adjustment of the  Conversion  Price for the Series C
Preferred  Stock  will be made as a result of the actual  issuance  of shares of
Common Stock on the exercise of any such rights or options or the  conversion of
any such convertible securities.

          (c) Upon the  redemption or  repurchase of any such  securities or the
expiration  or  termination  of the right to  convert  into,  exchange  for,  or
exercise with respect to, Common Stock,  the  Conversion  Price for the Series C
Preferred Stock will be readjusted to such price as would have been obtained had
the adjustment made upon their issuance been made upon the basis of the issuance
of only the number of such securities as were actually converted into, exchanged
for, or  exercised  with respect to,  Common  Stock.  If the  purchase  price or
conversion or exchange  rate  provided for in any such  security  changes at any
time,  then, upon such change becoming  effective,  the Conversion Price for the
Series C  Preferred  Stock then in effect  will be  readjusted  to such price as
would have been  obtained  had the  adjustment  made upon the  issuance  of such
securities  been made upon the basis of (i) the  issuance  of only the number of
shares of Common  Stock  theretofore  actually  delivered  upon the  conversion,
exchange or exercise of such securities,  and the total  consideration  received
therefor,  and (ii) the granting or issuance, at the time of such change, of any
such securities then still outstanding for the  consideration,  if any, received
by the Company therefor and to be received on the basis of such changed price or
rate.

     6.8 Other Action  Affecting  Shares.  If the  Corporation  takes any action
affecting its share of Common Stock after March 10, 2000,  that would be covered
in Sections  6.4, 6.5 or 6.6 but for the manner in which such action is taken or
structured,  other than an action  described in Sections 6.4, 6.5 or 6.6,  which
would in any way  diminish the value of the Series C Preferred  Stock,  then the
Conversion  Price shall be adjusted in such manner as the Board of  Directors of
the  Corporation  shall  in good  faith  determine  to be  equitable  under  the
circumstances.

     6.9 Certificate as to  Adjustments.  Upon the occurrence of each adjustment
or  readjustment  of the  Conversion  Rate  pursuant  to  this  Section  6,  the
Corporation at its expense promptly will compute such adjustment or readjustment
in  accordance  with the terms  hereof and prepare and furnish to each holder of
Series  C  Preferred  Stock a  certificate  setting  forth  such  adjustment  or
readjustment  and  showing in detail the facts  upon  which such  adjustment  or
readjustment is based. The Corporation,  upon the written request at any time of
any holder of Series C Preferred Stock, will furnish or cause to be furnished to
such  holder  a  like  certificate   setting  forth  (i)  such  adjustments  and
readjustments,  (ii) the Conversion Rate for the Series C Preferred Stock at the
time in effect,  and (iii) the number of shares of Common  Stock and the amount,
if any,  of  other  property  which  at the  time  would  be  received  upon the
conversion of the Series C Preferred Stock held by such holder.

     6.10  Fractional  Shares Upon  Conversion.  No fractional  shares of Common
Stock  will be issued  upon  conversion  of  Series C  Preferred  Stock.  If the
conversion would result in any fractional share, the Corporation  shall, in lieu
of issuing any fractional  share, pay the holder an amount in cash equal to such
fraction of the then effective Conversion Price as promptly as funds legally are
available  therefor.

7.  Modifications and Waivers.  The terms of the Series C Preferred Stock may be
amended,  modified  or  waived by  agreement  of the  Corporation,  Commonwealth
Associates,   L.P.   ("Commonwealth")  and  a  committee  to  be  designated  by
Commonwealth  whose  members  hold in the  aggregate  not  less  than 20% of the
outstanding Series C Preferred Stock (the "Committee");  provided, however, that

                                             6




no such  amendment,  modification  or waiver which would  decrease the number of
shares of Common Stock  issuable  upon the  Conversion of the Series C Preferred
Stock, or increase the Conversion  Price therefor (other than as a result of the
waiver or modification of any anti-dilution  provisions) may be made without the
approval  of the holders of at least 50% of the  outstanding  Series C Preferred
Stock.

8. Notices of Record Date.  In the event of any taking by the  Corporation  of a
record of the holders of any class of securities  for the purpose of determining
the holders  thereof who are entitled to receive any dividend (other than a cash
dividend)  or other  distribution,  any  right to  subscribe  for,  purchase  or
otherwise  acquire any shares of stock of any class or any other  securities  or
property,  or to receive  any other  right,  the  Corporation  will mail to each
holder of Series C Preferred Stock at least ten days prior to the date specified
therein,  a notice  specifying  the date on which any such record is to be taken
for the purpose of such  dividend,  distribution  or rights,  and the amount and
character  of such  dividend,  distribution  or right,  but failure to give such
notice  shall not affect the validity of the action taken as to which the notice
should have been given.

9.  Reservation of Stock Issuable Upon  Conversion.  From and after the date the
Company's  shareholders  approve the amendment to its Articles of  Incorporation
increasing the number of authorized  shares of Common Stock,  the Corporation at
all times will reserve and keep  available  out of its  authorized  but unissued
shares of Common Stock solely for the purpose of effecting the conversion of the
shares of Series C Preferred  Stock such number of its shares of Common Stock as
from  time to time  will be  sufficient  to effect  the  conversion  of all then
outstanding shares of Series C Preferred Stock; and if at any time the number of
authorized  but unissued  shares of Common Stock is not sufficient to effect the
conversion  of all then  outstanding  shares of  Series C  Preferred  Stock,  in
addition to such other  remedies as may be  available to the holders of Series C
Preferred  Stock for such  failure,  the  Corporation  will take such  corporate
action as, in the opinion of its  counsel,  may be  necessary  to  increase  its
authorized but unissued  shares of Common Stock to such number of shares as will
be sufficient for such purpose.

10. Notices. Any notices required by this Certificate to be given to the holders
of shareholders  or the Corporation  must be in writing and will be deemed given
upon personal delivery, one day after deposit with a reputable overnight courier
service for overnight  delivery or after  transmission  by facsimile  telecopier
with confirmation of successful transmission,  or five days after deposit in the
United States mail, by registered  or certified  mail postage  prepaid,  or upon
actual  receipt if given by any other  method,  addressed to each holder of such
record at his address appearing on the books of the Corporation.

11.  Covenants.  In addition to any other rights provided by law, so long as any
shares of Series C Preferred Stock are  outstanding,  the  Corporation,  without
first  obtaining the written  consent of  Commonwealth  and the Committee as set
forth in Section 7 above, will not:

     (a)  increase the authorized number of shares of Preferred Stock; or

     (b)  authorize  or issue  shares of any class or series of stock having any
preference or priority  senior to the Series C Preferred  Stock as to dividends,
rights on liquidation or redemption.


                                        7


                                                  For office use only        006

                           Mail to: Secretary of State
                              Corporations Section
                            1560 Broadway, Suite 200
                                Denver, CO 80202
                                 (303) 894-2251
                               Fax (303) 894-2242
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                            CERTIFICATE OF CORRECTION

Pursuant to the  Colorado  Business  Corporation  Act,  the  undersigned  hereby
executes the following certificate of correction:

FIRST:    The exact name of the corporation is U.S. WIRELESS DATA, INC.
                                              ----------------------------------
          organized under the laws of COLORADO
                                     -------------------------------------------

SECOND:   Description  of  the  documents  being  corrected  (i.e.  Articles  of
          Incorporation,  Amendment, Merger or other) or an attached copy of the
          document:

       ARTICLES OF AMENDMENT TO ARTICLES OF INCORPORATION - Recpt. # 20001050706

THIRD:    Date document was filed March 10, 2000.
                                  --------------

FOURTH: Statement of incorrect information:  Exhibit 1 - Designation of Series C
Convertible Preferred Stock of U.S. Wireless Data, Inc.

1.  Designation.  Six Million Five Hundred  Thousand  (6,500,000)  shares of the
Corporation's 15,000,000 total authorized shares of no par value preferred stock
are hereby  designated  as Series C  Convertible  Preferred  Stock  (hereinafter
referred to as the "Series C Preferred Stock").

FIFTH: Statement of corrected  information:  Exhibit 1 - Designation of Series C
Convertible Preferred Stock of U.S. Wireless Data, Inc.

1. Designation.  Eight Million Four Hundred Fifty Thousand (8,450,000) shares of
the  Corporation's  15,000,000 total authorized shares of no par value preferred
stock are hereby designated as Series C Convertible Preferred Stock (hereinafter
referred to as the "Series C Preferred Stock").

                                     U. S. WIRELESS DATA, INC.


                         Signature:  By:     /s/ Charles I. Leone
                                           -------------------------------------
                                     Title:  Charles I. Leone, Chief Financial
                                             Officer, Chief Operating Officer
                                             and Secretary