THIRD AMENDMENT TO CREDIT AGREEMENT

            This Third Amendment to Credit Agreement (this  "Amendment") is made
and entered into as of  September  29,  2000,  by and among THE CHASE  MANHATTAN
BANK,  formerly  known  as  CHASE  BANK  OF  TEXAS,  N.A.,  a  national  banking
association ("Lender"), TIDEL ENGINEERING, L.P. ("Borrower"), a Delaware limited
partnership,  and TIDEL TECHNOLOGIES,  INC., a Delaware  corporation  ("Ultimate
Parent").

                                R E C I T A L S:
                                ---------------

            A. On April 1, 1999, Lender,  Borrower,  and Ultimate Parent entered
into that certain  Credit  Agreement  (including  all  amendments  thereto,  the
"Credit  Agreement")  pursuant to which Lender agreed to make loans and advances
(collectively  the "Loans") to Borrower and Ultimate  Parent in accordance  with
the terms  thereof.  Lender,  Borrower  and  Ultimate  Parent  entered into that
certain First Amendment to Credit Agreement, effective as of September 30, 1999,
and that certain Second Amendment to Credit Agreement, effective as of September
8, 2000.

            B. The Loans are evidenced by that certain  Revolving Credit Note of
even  date  with  the  Credit  Agreement,  in the  stated  principal  amount  of
$7,000,000.00,  and  that  certain  Term  Note  of even  date  with  the  Credit
Agreement, in the stated principal amount of $544,000.00,  each bearing interest
and being payable to the order of Lender as therein provided (collectively,  the
"Notes").  The Credit  Agreement,  the Notes and the documents,  instruments and
agreements executed in connection therewith are collectively  referred to herein
as the "Loan Documents".

            C. Borrower and Ultimate Parent have requested  Lender to consent to
the issuance by Ultimate Parent of 6% convertible  subordinated  debentures (the
"Convertible  Subordinated  Debentures") in the aggregate  amount of $3,000,000,
which will be issued to Acorn  Investment  Trust on behalf of its  series  Acorn
Fund, and other related  transactions  which are contemplated in the convertible
Debenture  Purchase  Agreement dated as of September __, 2000,  between Ultimate
Parent and Acorn Investment Trust.

            D. Lender, at the request of Borrower and Ultimate Parent,  for good
and  valuable  consideration,  is willing to enter  into this  Amendment  and to
consent to the issuance of the Convertible  Subordinated  Debentures by Ultimate
Parent  and  the  transactions  related  thereto,  and  the  performance  of the
obligations and agreements of Ultimate Parent thereunder, all upon the terms and
conditions set forth below.

                               A G R E E M E N T:
                               -----------------

            NOW,  THEREFORE,  for and in consideration of Ten and No/100 Dollars
($10.00) and other good and valuable consideration,  the receipt and sufficiency
of which are hereby acknowledged,  Borrower,  Ultimate Parent, and Lender hereby
covenant and agree as follows:

            1. Defined Terms.  Capitalized  terms used but not otherwise defined
herein shall have the meanings given to them in the Credit Agreement.




            2. Additional  Definitions.  Section 1.1 of the Credit  Agreement is
hereby amended to add the following definitions:


               Convertible Subordinated Debenture shall mean the following:

               (a)    the Tidel Technologies,  Inc. 6% Convertible Debenture Due
                      September  8,  2004,  issued  by  Ultimate  Parent  in the
                      aggregate  principal  amount of  Fifteen  Million  Dollars
                      ($15,000,000); and

               (b)    the Tidel Technologies,  Inc. 6% Convertible Debenture Due
                      September  8,  2004,  issued  by  Ultimate  Parent  in the
                      aggregate   principal  amount  of  Three  Million  Dollars
                      ($3,000,000).

               Convertible  Subordinated  Debenture  Documents  shall  mean  the
following:

               (a)    the  Convertible  Subordinated  Debenture and that certain
                      Convertible  Debenture  Purchase Agreement dated September
                      8, 2000, between Montrose  Investments Ltd., as purchaser,
                      and Ultimate Parent, as issuer, and all documents executed
                      in  connection  with the  foregoing,  which  evidence  the
                      issuance of the Convertible Subordinated Debentures in the
                      aggregate amount of Fifteen Million Dollars  ($15,000,000)
                      and related transactions; and

               (b)    the  Convertible  Subordinated  Debenture and that certain
                      Convertible  Debenture  Purchase Agreement dated September
                      __, 2000,  between Acorn Investment Trust on behalf of its
                      series Acorn Fund, as purchaser,  and Ultimate Parent,  as
                      issuer,  and all documents executed in connection with the
                      foregoing,  which evidence the issuance of the Convertible
                      Subordinated  Debentures in the aggregate  amount of Three
                      Million Dollars ($3,000,000) and related transactions.

            3.  Indebtedness.  Schedule  6.16 to the Credit  Agreement is hereby
amended and supplemented to add the following:

                           4. 6%  Convertible  Debentures due September 8, 2004,
                      in the aggregate  principal  amount of $3,000,000,  issued
                      pursuant to the Convertible  Debenture  Purchase Agreement
                      between  Ultimate  Parent,  as issuer,  and the  purchaser
                      party thereto.

            4.  Amendment  and  Consent  Fee.  In  consideration  of the  Lender
entering  into this  Amendment  and giving its consent to the  Debenture and the
Investment,  the  Borrower  agrees to pay to the Lender a  commitment  fee in an
amount equal to Five  Thousand  Dollars  ($5,000)  (the  "Amendment  and Consent
Fee").




            5.  Consent to  Issuance  of  Convertible  Subordinated  Debentures.
Subject  to  satisfaction  of and  compliance  with  all  terms  and  conditions
precedent  set forth in Section 6 below,  Lender  consents  to the  issuance  by
Ultimate  Parent  of  the  Convertible   Subordinated   Debentures  and  related
transactions  in accordance  with the terms and  conditions  of the  Convertible
Subordinated  Debenture  Documents  and the  performance  of  Ultimate  Parent's
obligations and agreements thereunder.

            6.  Conditions  Precedent  to Consent to  Amendment  and  Consent to
Convertible  Subordinated Debenture.  The effectiveness of this Amendment and of
Lender's  consent to the Convertible  Subordinated  Debentures is subject to the
satisfaction of the following conditions  precedent,  unless specifically waived
in writing by Lender:

                (1)    Lender shall have received a Subordination  Agreement, in
                       form and substance  satisfactory to Lender, duly executed
                       by each holder of the Convertible Subordinated Debenture;

                (2)    The representations  and warranties  contained herein and
                       in all Loan Documents,  as amended hereby,  shall be true
                       and  correct  in all  material  respects  as of the  date
                       hereof as if made on the date hereof;

                (3)    No Event of Default by Borrower or Ultimate  Parent under
                       the Loan  Documents,  as amended  hereby,  as of the date
                       hereof,  shall have  occurred  and be  continuing  and no
                       event or  conditions  shall have  occurred  that with the
                       giving  of  notice  or lapse of time or both  would be an
                       Event of Default by Borrower or Ultimate Parent under the
                       Loan Documents, as amended hereby, as of the date hereof,
                       unless such Event of Default has been specifically waived
                       in writing by Lender;

                (4)    Lender  shall  have  received   executed  copies  of  the
                       Convertible   Subordinated   Debenture   and  all   other
                       documents  executed in  connection  therewith  (including
                       without  limitation,  the  Purchase  Agreement,  and  the
                       Registration Rights Agreement,  as such terms are defined
                       in the Convertible Subordinated Debenture),  certified by
                       Borrower as being true and complete; and

                (5)    Lender shall have received the Amendment and Consent Fee.

            7.  Costs and  Expenses.  Borrower  agrees to  reimburse  Lender for
Lender's  costs  and  expenses,   including,  but  not  limited  to,  reasonable
attorneys'  fees and legal  expenses,  incurred by Lender in connection with the
preparation  of this  Amendment  and in  connection  with  the  negotiation  and
consummation of the transaction contemplated hereby.

            8. The Credit  Agreement.  All references to the Credit Agreement in
the Loan  Documents  shall be deemed to be the  Credit  Agreement,  as  modified
hereby.  Borrower expressly promises to perform all of its obligations under the
Credit Agreement and other Loan Documents, as modified by this Amendment.




            9.  Acknowledgments  of Borrower and Ultimate  Parent.  Borrower and
Ultimate  Parent  each  hereby  acknowledge  and agree that (a) Lender is not in
default in the  performance of its  obligations  under the Loan  Documents;  (b)
Borrower and Ultimate Parent have no claims, counterclaims,  offsets, credits or
defenses  to  the  Loan  Documents  and  the  performance  of  their  respective
obligations thereunder,  or if Borrower or Ultimate Parent have any such claims,
counterclaims,  offsets,  credits  or  defenses  to the  Loan  Documents  or any
transaction  related  to the Loans  and/or the Loan  Documents,  same are hereby
waived,  relinquished and released in  consideration  of Lender's  execution and
delivery of this  Amendment;  (c) all of the  provisions of the Loan  Documents,
except  as  amended  hereby,  are in full  force  and  effect;  and (d) upon the
execution hereof, the Credit Agreement, the Notes, and the other Loan Documents,
as amended herein, are not in default by Borrower or Ultimate Parent.

            10. Full Force and Effect.  Except as expressly modified and amended
in this  Amendment,  all of the terms,  provisions  and conditions of the Credit
Agreement,  the Notes, and all other Loan Documents are and shall remain in full
force and effect and are incorporated herein by reference.

            11.  Counterparts  and Facsimile  Signatures.  This Amendment may be
executed in any number of  counterparts  and by the  parties  hereto in separate
counterparts, each of which when so executed and delivered shall be deemed to be
an original,  and all of which taken together  shall  constitute but one and the
same  instrument.  Any party to this  Amendment may indicate its intention to be
bound by this  Amendment by its signature to the  signature  page hereof and the
delivery of the signature page hereof to the other party or its  representatives
by facsimile  transmission or telecopy. The delivery of a party's signature page
on the signature  page hereof by facsimile  transmission  or telecopy shall have
the same force and effect as if such party signed and delivered  this  Amendment
in person.

            12. No Oral Agreements.  THIS AMENDMENT AND THE OTHER LOAN DOCUMENTS
EMBODY  THE  ENTIRE  AGREEMENT  AMONG  THE  PARTIES  AND  SUPERSEDES  ALL  PRIOR
AGREEMENTS AND  UNDERSTANDINGS,  IF ANY,  RELATING TO THE SUBJECT MATTER HEREOF.
THIS WRITTEN AMENDMENT  REPRESENTS THE FINAL AGREEMENT AMONG THE PARTIES AND MAY
NOT BE  CONTRADICTED  BY EVIDENCE OF PRIOR,  CONTEMPORANEOUS  OR SUBSEQUENT ORAL
AGREEMENTS OF THE PARTIES. THERE ARE NO ORAL AGREEMENTS AMONG THE PARTIES.

                  [Remainder of Page Intentionally Left Blank]





            IN WITNESS  WHEREOF,  the parties have executed this Third Amendment
to Credit Agreement as of the day and year first above written.

                                   LENDER:

                                   THE CHASE MANHATTAN BANK, formerly
                                   known as CHASE BANK OF TEXAS, N.A.,
                                   a New York state banking association



                                   By:_________________________________________
                                        Joanne Bramanti, Vice President


                                   BORROWER:

                                   TIDEL ENGINEERING, L.P.,
                                   a Delaware limited partnership

                                   By:   Tidel Cash Systems, Inc., its sole
                                         general partner


                                         By:___________________________________
                                              James T. Rash, Chairman

                                   ULTIMATE PARENT:

                                   TIDEL TECHNOLOGIES, INC.,
                                   a Delaware corporation


                                   By:_________________________________________
                                       James T. Rash, Chief Executive Officer





            By its execution below, each of Tidel Technologies, Inc., a Delaware
corporation,  Tidel  Services  Inc.,  a  Delaware  corporation,  and Tidel  Cash
Systems,  Inc.,  a Delaware  corporation  (each  individually,  a  "Guarantor"),
acknowledges  and consents to all of the terms and conditions of this Amendment,
and  ratifies and  confirms  its  respective  Guaranty to and for the benefit of
Lender.  Each  Guarantor   acknowledges  that  such  Guarantor  has  no  claims,
counterclaims,  offsets,  credits  or  defenses  to the Loan  Documents  and the
performance of its  obligations  thereunder,  or if such Guarantor does have any
such claims,  counterclaims,  offsets, credits or defenses to the Loan Documents
or any  transaction  related to the Loans  and/or the Loan  Documents,  same are
hereby waived,  relinquished and released in consideration of Lender's execution
and delivery of this  Amendment.  Further,  each  Guarantor  agrees that nothing
contained in this Amendment shall adversely affect any right or remedy of Lender
under its  respective  Guaranty  and that with  respect  to such  Guaranty,  all
references in such Guaranty to the "Obligations"  shall mean the  "Obligations",
as amended by this Amendment;  that the execution and delivery of this Amendment
shall in no way  change or modify  such  Guarantor's  obligations  as  Guarantor
pursuant to its Guaranty;  and that the execution and delivery of any agreements
by Borrower and Lender in connection  with this Amendment shall not constitute a
waiver by Lender of any of Lender's rights against any Guarantor.

                                   TIDEL TECHNOLOGIES, INC.,
                                   a Delaware corporation


                                   By:________________________________________
                                      James T. Rash,
                                      Chief Executive Officer


                                   TIDEL SERVICES, INC.,
                                   a Delaware corporation


                                   By:_________________________________________
                                       James T. Rash, Chairman

                                   TIDEL CASH SYSTEMS, INC.,
                                   a Delaware corporation


                                   By:_________________________________________
                                      James T. Rash, Chairman