<PAGE>

THIS DEMAND PROMISSORY NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
1933, AS AMENDED (THE "ACT"), OR THE SECURITIES LAWS OF ANY STATE AND THIS NOTE
MAY NOT BE SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF AN EFFECTIVE
REGISTRATION STATEMENT UNDER SUCH ACT AND LAWS UNLESS MAKER RECEIVES AN OPINION
OF COUNSEL REASONABLY ACCEPTABLE TO IT THAT SUCH REGISTRATION IS NOT REQUIRED.


                             DEMAND PROMISSORY NOTE
                             ----------------------

$55,000                                                              May 2, 2003

         FOR VALUE RECEIVED, the undersigned, LaserLock Technologies, Inc., a
Nevada corporation having offices at 837 Lindy Lane, Bala Cynwyd, Pennsylvania
19004 ("Maker"), promises to pay to LaRoch Limited., a corporation formed under
the laws of Bahamas ("Payee", Payee and any subsequent holder(s) hereof are
individually and collectively referred to as the "Holder"), or order, the sum of
Fifty-five Thousand and no/100 Dollars ($55,000) or so much thereof as may from
time to time hereafter be outstanding hereunder, whichever is less, together
with interest thereon, all as hereinafter provided.

         1. Interest and Principal Payments.

         a. This Note is payable on the earlier of: (i) demand by Holder
provided such demand may only be made upon or after the closing of any debt or
equity financing entered into by Maker after the date hereof involving the sale
and issuance by Maker of shares of capital stock of Maker ("Stock") or the
issuance by Maker of debt convertible into Stock or issued together with
warrants, options or rights to acquire Stock resulting in cash proceeds to Maker
of $55,000 (on an aggregate basis including any such prior financings entered
into by Maker after the date hereof) (collectively, the "Financing") (as used
herein, "Financing" shall not include the issuance of Stock to directors,
officers, employees or advisors of Maker pursuant to an equity compensation plan
of Maker); or (ii) July 2, 2003 (collectively, the "Maturity Date').

         b. This Note evidences and the principal amount of this Note represents
in part all fees and expenses of Lender, including a loan origination fee, legal
fees and other expenses in an aggregate amount of $5,000.

         c. Interest on this Note shall accrue at a rate of ten percent (10%)
per annum, computed on the basis of a year of 360 days. The first 60 days of
accrued interest on this Note is deemed fully paid by the Maker and such amount
is included in and evidenced by the principal amount of this Note. If the
Maturity Date of this Note is extended by 30 days, then the interest for that 30
day extended period shall accrue at ten percent (10%) per annum and be due and
payable on such extended Maturity Date.

         d. Upon an Event of Default, the unpaid principal amount of this Note
shall bear simple interest per annum at an increased rate from ten percent (10%)
to twelve percent (12%) per annum, computed on the basis of a year of three
hundred sixty (360) days.

         e. All payments of principal and interest shall be made in lawful money
of the United States of America and shall be made to Holder at Holder's address
set forth in Section 6 or at such other place as Holder may designate to Maker
in writing.
<PAGE>

         2. Prepayments and Extensions. This Promissory Note may be prepaid in
whole or in part at anytime. Maker may with extend the Maturity Date (including
if such Maturity Date results from a demand by Holder) for an additional 30 days
for a payment to Lender of $2,500.


         3. Covenants.

         3.1      Affirmative Covenants: Maker covenants and agrees that, while
                  the Note is outstanding, it shall:

                  a.       Pay and discharge all taxes, assessments and
                           governmental charges or levies imposed upon it or
                           upon its income and profits, or upon any property
                           belonging to it before the same shall be in default;
                           provided however, that the Maker shall not be
                           required to pay any such tax, assessment, charge or
                           levy that is being contested in good faith by proper
                           proceedings and adequate reserves for the accrual of
                           same are maintained if required by generally accepted
                           accounting principles.

                  b.       Preserve its corporate existence and continue to
                           engage in business of the same type as conducted as
                           of the date hereof; and

                  c.       Comply in the ordinary course of the Maker's business
                           with all applicable statutes, laws, ordinances,
                           orders, judgments, decrees, injunctions, rules,
                           regulations, permits, licenses, authorizations and
                           requirements (each a "Requirement") of all
                           governmental bodies, departments, commissions,
                           boards, companies or associations insuring the
                           premises, courts, authorities, officials, or
                           officers; except where the failure to comply would
                           not have a material adverse effect on the Maker;
                           provided that nothing contained herein shall prevent
                           Maker from contesting the validity or the application
                           of a Requirement.

         3.2      Negative Covenants. The Maker covenants and agrees that while
                  this Note is outstanding, it will not directly or indirectly:

                  a.       Make or forgive any loans to "Insiders" (as defined
                           by those persons required to file reports under
                           Section 16(a) of the Securities Exchange Act of 1934,
                           as amended) or guarantee or otherwise in any way
                           become or be responsible for indebtedness for
                           borrowed money, or for obligations, in either case of
                           any of the Insiders, contingently or otherwise, other
                           than such guaranties existing as of the date hereof
                           and advancement of expenses in the ordinary course of
                           business;

                  b.       Declare or pay any cash dividends or make any
                           interest payments in cash to the holders of any of
                           its outstanding equity or debt securities, except in
                           the ordinary course of business according to the
                           terms of the instrument;

                  c.       Sell, transfer or dispose of any of its assets other
                           than in the ordinary course of its business and for
                           fair value; or

                  d.       Purchase, redeem, retire or otherwise acquire for
                           value any of its capital stock now or hereafter
                           outstanding.


                                       2
<PAGE>

         4.       Events of Default. The occurrence or existence of any one of
                  the following events or conditions shall constitute an "Event
                  of Default":

         a. Maker shall fail to pay the principal of, or interest on, this Note
when the same becomes due and payable in accordance with the terms hereof and
such amount remains unpaid for ten (10) days after the date of written notice
thereof from Holder;

         b. Maker fails to observe or perform any other covenant or agreement on
the part of Maker contained in this Note which failure continues for a period of
thirty (30) days after the date of written notice thereof from Holder; or

         c. Maker makes a general assignment for the benefit of its creditors or
applies to any tribunal for the appointment of a trustee or receiver of a
substantial part of the assets of Maker, or

         d. Maker commences any proceedings relating to Maker under any
bankruptcy, reorganization, arrangement, insolvency, readjustment of debts,
dissolution or other liquidation law of any jurisdiction; or any such
application is filed, or any such proceedings are commenced against Maker and
Maker indicates its consent to such proceedings, or an order or decree is
entered by a court of competent jurisdiction appointing such trustee or
receiver, or adjudicating Maker bankrupt or insolvent, or approving the petition
in any such proceedings, and such order or decree remains unstayed and in effect
for ninety (90) days; provided, however, that the Maker shall have sixty (60)
days to obtain the dismissal or discharge of any involuntary proceeding filed
against it.

         5. Remedies.

         a. If an Event of Default occurs and is continuing, Holder may, by
notice in writing to Maker, declare the entire unpaid principal of the Note to
be due and payable immediately, together with unpaid interest thereon, and
Holder may thereupon proceed to protect and enforce its rights either by suit in
equity or by action at law or by other appropriate proceedings, whether for
specific performance (to the extent permitted by law) of any covenant or
agreement contained herein or in aid of the exercise of any power granted
herein, or proceed to enforce the payment of this Note or to enforce any other
legal or equitable right of Holder.

         b. In the event this Note is placed in the hands of an attorney for
collection or for enforcement, or in the event that Holder incurs any costs
incident to the collection of any indebtedness evidenced hereby, Maker agrees to
pay all reasonable attorneys' fees and expenses, all court and other costs and
the reasonable costs of any other collection efforts. Forbearance to exercise
the remedies set forth herein with respect to any failure or breach of Maker
shall not constitute a waiver by Holder of any of such remedies.

         6. Security. Pursuant to the Security Agreement of even date herewith
between the Maker and Holder of this Note, this Note is secured by the proceeds
of a certain Regulation S Stock Purchase Agreement which shall be entered into
by and between the Maker and Californian Securities S.A., a Panamanian
corporation.

         7. Certain Representations. Maker represents that (i) the execution of
this Promissory Note was authorized by vote of its Board of Directors at meeting
properly convened pursuant to Maker's bylaws or by unanimous written consent,
properly obtained and (ii) that the person executing the Promissory Note was
duly authorized to so act on behalf of Maker.


                                       3

<PAGE>

         8. Notices; Miscellaneous.

         a. All notices, requests, consents and other communications required or
permitted under this Note shall be in writing and shall be deemed to have been
delivered ten (10) days after the date mailed, postage prepaid, by certified
mail, return receipt requested, or on the date personally delivered:

         i.       If to Payee, to:

                  LaRoch Limited
                  Malzard House
                  15 Union Street
                  St Helier, Jersey
                  JE4 8TY
                  Channel Islands

                  Copy to:
                  Philip T. Powers
                  60 W. Randolph
                  Suite 200
                  Chicago, IL  60601

         ii.      If to Maker, to:

                  Laser Lock Technologies, Inc.,
                  837 Lindy Lane
                  Bala Cynwyd, Pennsylvania 19004

                  Att: Norman Gardner

         iii.     If to any Holder other than Payee, to such address as may have
                  been designated by notice given Maker by such Holder.

Maker, Payee or any other Holder may designate a different address by notice
given in accordance with the foregoing.

         b. Maker and all sureties, endorsers and guarantors of this Note,
jointly and severally, waive demand, presentment for payment, notice of
nonpayment, protest, notice of protest, notice of intent to accelerate, all
other notices (other than notices required by Sections 3.a. or 3.b.), filing of
suit and diligence in collecting this Note or enforcing any security given
therefore, and agree to any substitution, exchange, or release of any security,
with or without consideration, now or hereafter given for this Note or the
release of any party primarily or secondarily liable hereon; and such
substitution, exchange or release shall not in any way affect the obligations of
any such Maker, surety, endorser or guarantor. Maker and all sureties, endorsers
or guarantors of this Note further agree that it will not be necessary for
Holder, in order to enforce payment of this Note, first to institute or exhaust
its remedies against Maker or any other party liable therefore or to enforce its
rights against any security for this Note.


<PAGE>

         c. From time to time, without affecting the obligations of Maker,
successors or assigns to pay the outstanding principal balance of this Note and
observe the covenants of Maker contained herein and in the documents and
instruments related hereto, without giving notice to or obtaining the consent of
Maker, successors or assigns, and without liability on the part of Holder,
Holder may, at the option of Holder, extend the time for payment of such
outstanding principal balance or any part thereof, reduce the payments thereon,
release anyone liable on any of such outstanding principal balance, accept a
renewal of this Note, modify the terms of payment of such outstanding principal
balance in any manner more favorable to Maker or join in any extension or
subordination agreement, and agree in writing with Maker to modify the rate of
interest or period of amortization of this Note or change the amount of the
payments hereunder. No one or more of such actions shall constitute a novation
or otherwise affect or impair the indebtedness evidenced hereby.


This Note and the rights and obligations of the undersigned shall be governed
by, and construed and interpreted in accordance with, the laws of the State of
New York (without regard to principles of conflicts of laws) and applicable
federal law.



                                         LaserLock Technologies, Inc.


                                         By:  Norman Gardner
                                            ------------------------------------
                                              Norman Gardner, President



ATTEST:



----------------------------------
         Secretary