Document:

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EXHIBIT 10.4

                                  Bill of Sale
                                  ------------

     KNOW ALL MEN BY THESE PRESENTS THAT Viisage Technology, Inc., a Delaware
corporation ( "Buyer") and Lau Acquisition Corp. d/b/a Lau Technologies, a
Massachusetts corporation ("Seller") have entered into that certain Asset
Purchase Agreement dated as of January 10, 2002 (the "Purchase Agreement"),
which provides, inter alia, for the sale by Seller to Buyer the Acquired Assets.
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All capitalized terms used herein shall have the same meaning as in the Purchase
Agreement, unless otherwise defined in this Bill of Sale.

     NOW, THEREFORE, Seller, for good and valuable consideration, the receipt
and sufficiency of which is hereby acknowledged, and pursuant to the terms and
conditions of the Purchase Agreement, hereby sells, grants, bargains, conveys,
transfers, assigns and delivers to Buyer all of Seller's right, title and
interest in and to the Acquired Assets, to have and to hold the same, unto and
for the use of Buyer or its nominee, forever.

     After delivery of this instrument, Seller hereby covenants and agrees that,
at any time and from time to time, at the request of Buyer, Seller shall do,
execute, acknowledge and deliver, or cause to be done, executed, acknowledged
and delivered, to Buyer each and all such further acts, transfers, conveyances,
assurances, assignments, bills of sale, endorsements and other documents, in
form and substance reasonably satisfactory to Buyer and its counsel, as Buyer
may reasonably request in order to convey, transfer to, assign, assure, enforce
and confirm unto and vest in Buyer title to all or any of the Acquired Assets
and to assist Buyer in reducing such Acquired Assets to its possession. Seller
hereby grants to Buyer a limited power of attorney solely, coupled with an
interest, for purposes of endorsing checks payable to Seller in respect of the
accounts receivable included in the Acquired Assets and to execute such
documents and take such other actions as necessary in connection with the
collection of such accounts receivable.

     This Bill of Sale is made subject to and with the benefit of the respective
representations and warranties, covenants, terms, conditions, and other
provisions of the Purchase Agreement. In the event of any conflict or other
inconsistency between this Bill of Sale and the Purchase Agreement, the Purchase
Agreement shall be the controlling agreement. The terms and conditions of this
Bill of Sale shall be binding upon, inure to the benefit of, and be enforceable
by the respective successors and permitted assigns of the parties hereto.

     The terms and conditions of this Bill of Sale shall be governed and
construed in accordance with the laws of the Commonwealth of Massachusetts.

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     IN WITNESS WHEREOF, the undersigned have executed and delivered this Bill
of Sale as of the 10/th/ day of January, 2002.

                                 LAU ACQUISITION CORP. d/b/a
                                 LAU TECHNOLOGIES

                                 By /s/ Joanna T. Lau
                                    --------------------------------------------

                                    Name:  Joanna T. Lau
                                    Title: President and Chief Executive Officer

                                 VIISAGE TECHNOLOGY, INC.

                                 By /s/ Thomas J. Colatosti
                                    --------------------------------------------

                                    Name:  Thomas J. Colatosti
                                    Title: President and Chief Executive Officer<PAGE>

EXHIBIT 10.5

                              Assumption Agreement
                              --------------------

     THIS ASSUMPTION AGREEMENT (the "Agreement") is made as of January 10, 2002,
by Viisage Technology, Inc., a Delaware corporation, or its nominee ("Buyer").

                                    RECITALS

         WHEREAS, Lau Acquisition Corporation d/b/a Lau Technologies, a
Massachusetts corporation ("Seller") and Buyer have entered into a certain Asset
Purchase Agreement dated as of January 10, 2002 (the "Purchase Agreement").

         WHEREAS, the Buyer desires by this Agreement to undertake and assume
the Assumed Liabilities (as defined in Section 2.3 of the Purchase Agreement),
according to the terms and subject to the conditions of the Purchase Agreement.

         NOW, THEREFORE, in consideration of the premises and the mutual
covenants hereinafter set forth, and for other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, Buyer, intending
to be legally bound, hereby agrees as follows:

         1. All capitalized terms used herein shall have the same meaning as in
the Purchase Agreement, unless otherwise defined in this Agreement.

         2. For good and valuable consideration, the receipt and adequacy of
which is hereby acknowledged, Buyer hereby assumes and becomes responsible for,
and will hereafter pay, perform and discharge promptly when due, the Assumed
Liabilities.

         3. Buyer hereby agrees to satisfy all of the obligations and
requirements of the Contracts and to otherwise perform under the Contracts on
and after the Closing Date.

         4. Buyer will not assume or become responsible for, and will not be
deemed to have assumed or to have become responsible for any obligation not
expressly assumed by Buyer in the Purchase Agreement.

         5. Buyer shall execute and deliver, or cause to be executed and
delivered, from time to time hereafter, upon request, all such further documents
and instruments and shall do and perform all such acts as may be reasonably
necessary to give full effect to the intent of this Agreement.

         6. The terms of this Agreement shall be binding upon, inure to the
benefit of and be enforceable by the respective successors and permitted assigns
of Buyer. This Agreement is made subject to and with the benefit of the
respective representations and warranties, covenants, terms, conditions, and
other provisions of the Purchase Agreement. In the event of any conflict or
other inconsistency between this Agreement and the Purchase Agreement, the
Purchase Agreement shall be the controlling agreement.

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         7. The terms and conditions of this Agreement shall be governed and
construed in accordance with the internal laws, but not the law of conflicts, of
the Commonwealth of Massachusetts.

         IN WITNESS WHEREOF, Buyer has executed this Assumption Agreement as of
the date first written above.

                                    VIISAGE TECHNOLOGY, INC.

                                By: /s/ Thomas J. Colatosti
                                    -------------------------------------
                                    Name:  Thomas J. Colatosti
                                    Title: President and Chief Executive Officer<PAGE>

EXHIBIT 10.6

                   Intellectual Property Assignment Agreement
                   ------------------------------------------

         WHEREAS, Lau Acquisition Corp. d/b/a Lau Technologies, a Massachusetts
corporation ( "Assignor") is the owner of the United States and foreign Letters
Patents and patent applications ("Patents and Applications") and United States
trademark registrations ("Trademarks") that are specifically identified and
listed in the schedule attached hereto, incorporated herein, and made a part
hereof (hereinafter collectively the "Intellectual Property"); and

         WHEREAS, Viisage Technology, Inc. (hereinafter "Assignee"), a
corporation organized under the laws of the State of Delaware, is desirous of
acquiring all right, title, and interest in and to the Intellectual Property;

         NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which Assignor hereby acknowledges, and intending to be legally
bound hereby, Assignor does hereby sell, assign, transfer, and set over unto
Assignee, its successors and assigns, Assignor's entire right, title, and
interest in and to the Intellectual Property, including any continuation,
divisional, or reissue applications of the Patents and Applications thereof and
any renewals of registrations or foreign trademark filings for Trademarks
thereof, in the United States and throughout the world, together with any
income, royalties, damages, goodwill or payment due or payable as of the date
hereof or hereafter with respect to the Intellectual Property, including,
without limitation, any claims for damages by reason of past, present or future
infringement or other unauthorized use of the Intellectual Property, with the
right to sue for, and collect the same for the Assignee's own use and enjoyment,
and for the use and enjoyment of its successors and

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assigns, the same to be held and enjoyed by the Assignee, its successors and
assigns, as fully as the same would have been held and enjoyed by the Assignor
had this assignment not been made.

         And for the consideration aforesaid, Assignor agrees that Assignor
will, upon request: execute and deliver to Assignee any additional papers,
including any separate assignments of the Intellectual Property, reasonably
necessary to record this Assignment in the United States and throughout the
world; generally do all other lawful acts reasonable and necessary to record
this Assignment in the United States and throughout the world; execute all
lawful papers reasonable and necessary for Assignee to obtain grant of Letters
Patent from any of the Applications and from any continuing, divisional, or
reissue applications thereof, and to vest Assignor's rights therein hereby
conveyed to Assignee as fully and entirely as the same would have been held by
Assignor if this assignment had not been made; and execute all lawful papers
reasonable and necessary in connection with any interference that may be
declared concerning any of the Patents or Applications, or any continuation,
divisional, or reissue thereof, or any Letters Patent issued from any such
Application, or continuation, divisional, or reissue application, and to
cooperate with Assignee in any way reasonable and necessary to obtain and
produce evidence in any such interference. Assignor hereby authorizes and
requests government patent office officials in the United States and in any
foreign countries to issue any and all Letters Patent resulting from the
Applications to Assignee. Assignor hereby grants Assignee or its legal
representative the power to insert on this Assignment any further accurate
identification of Assignee, the Patents, and/or the Applications and/or the
Trademarks that is necessary in order to comply with the rules of patent offices
and trademark offices in the United States or foreign countries for the purpose
of recording this Assignment.

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         IN WITNESS WHEREOF, Assignor have caused this instrument to be signed
by a duly authorized corporate officer and its corporate seal to be affixed
effective as of the 10th day of January, 2002.

                                LAU ACQUISITION CORP.
                                d/b/a LAU TECHNOLOGIES

                                By /s/ Joanna T. Lau
                                   --------------------------------------------
                                   Name:   Joanna T. Lau
                                   Title:  President and Chief Executive Officer

                                VIISAGE TECHNOLOGY, INC.

                                By /s/ Thomas J. Colatosti
                                   --------------------------------------------
                                   Name:   Thomas J. Colatosti
                                   Title:  President and Chief Executive Officer

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