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                                                                     Exhibit 3.1

                                AMENDED BYLAWS OF

                              IDENTIX INCORPORATED

                                     OFFICES

        1. Registered Office. The registered office of the corporation shall be
in the City of Dover, County of Kent, State of Delaware.


        2. Other Offices. The corporation may also have offices at such other
places both within and without the State of Delaware as the board of directors
may from time to time determine or the business of the corporation may require.

                                  STOCKHOLDERS

        3. Annual Meeting. Unless the board of directors or the President of the
corporation selects a different time or date, the annual meeting of stockholders
shall be held at 2:00 p.m. on the last Thursday of the fourth calendar month
following the end of the corporation's fiscal year. The annual meeting shall be
for the purpose of electing a board of directors and transacting such other
business as may properly be brought before the meeting.


        4. Special Meeting. Special meetings of stockholders may be called at
any time by the board of directors, the Chairman of the Board or the President
of the corporation.


        5. Place. Meetings of stockholders shall be held at the principal
executive office of the corporation or at any other place, within or without
California, which is designated by the board of directors or the President.


        6. Notice.


                (a) Annual and Special Meetings. A written notice of each
meeting of stockholders shall be given not more than 60 days and, except as
provided below, not less than ten days before the meeting to each stockholder
entitled to vote at the meeting. The


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notice shall state the place, date and hour of the meeting and, if directors are
to be elected at the meeting, the names of the nominees intended to be presented
by management for election. The notice shall also state (i) in the case of an
annual meeting, those matters which the board of directors intends to present
for action by the stockholders, and (ii) in the case of a special meeting, the
general nature of the business to be transacted and that no other business may
be transacted. Notice shall be delivered personally, by mail or other means
addressed to the stockholder at the address of such stockholder appearing on the
books of the corporation, the address given by the stockholder to the
corporation for the purpose of notice or as otherwise provided by law.

                (b) Adjourned Meetings. Notice of an adjourned meeting need not
be given if (i) the meeting is adjourned for 30 days or less, (ii) the time and
place of the adjourned meeting are announced at the meeting at which the
adjournment is taken and (iii) no new record date is fixed for the adjourned
meeting. Otherwise, notice of the adjourned meeting shall be given as in the
case of an original meeting.

        7. Record Date. The board of directors may fix in advance a record date
for the determination of the stockholders entitled to notice of any meeting, to
vote, to receive any dividend or other distribution or allotment of rights or to
exercise any rights. The record date shall be not more than 60 nor less than ten
days prior to the date of the meeting nor more than 60 days prior to such other
action. If no record date is fixed, the record date for determining stockholders
entitled to notice of or to vote at a meeting of stockholders shall be at the
close of business on the business day next preceding the day on which notice is
given, or, if notice is waived, the close of business on the business day next
preceding the day on which the meeting is held. Except as otherwise provided by
law, when a record date is fixed, as provided herein, only stockholders on the
record date are entitled to notice and to vote, to receive the dividend,
distribution or allotment of rights or to exercise rights, as the case may be,
notwithstanding any transfer of shares on the books of the corporation occurring
after the record date. Except as otherwise provided by law, the corporation
shall be entitled to treat the holder of record of any shares as the holder in
fact of such shares and shall not be bound to recognize any equitable or other
claim to or interest in such shares on the part of any other person, whether or
not the corporation shall have express or other notice of such claim or
interest. A determination of stockholders of record entitled to notice of or to
vote at a meeting of stockholders shall apply to any adjournment of the meeting
unless the board of directors fixes a new record date

        8. Quorum. The holders of a majority of the stock issued and outstanding
and entitled to vote thereat, present in person or represented by proxy, shall
constitute a quorum at all meetings of the stockholders for the transaction of
business except as otherwise provided by statute or by the certificate of
incorporation. If, however, such

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quorum shall not be present or represented at any meeting of the stockholders,
the stockholders entitled to vote thereat, present in person or represented by
proxy, shall have power to adjourn the meeting from time to time, without notice
other than announcement at the meeting, until a quorum shall be present or
represented. At such adjourned meeting at which a quorum shall be present or
represented, any business may be transacted which might have been transacted at
the meeting as originally noticed. If the adjournment is for more than 30 days,
or if after the adjournment a new record date is fixed for the adjourned
meeting, a notice of the adjourned meeting shall be given to each stockholder of
record entitled to vote at the meeting.

        9. Required Vote. When a quorum is present at any meeting, except with
respect to the election of directors, the vote of the holders of a majority of
the stock having voting power present in person or represented by proxy shall
decide any question brought before such meeting, unless the question is one upon
which by express provision of statute or of the certificate of incorporation, a
different vote is required, in which case such express provision shall govern
and control the decision of such question.

        10. Proxies and Voting. At any meeting of the stockholders, every
stockholder entitled to vote may vote in person or by proxy authorized by an
instrument in writing filed in accordance with the procedure established for the
meeting. Unless otherwise provided in the certificate of incorporation, each
stockholder shall at every meeting of the stockholders be entitled to one vote
in person or by proxy for each share of the capital stock having voting power
held by such stockholder, but no proxy shall be voted on after three years from
its date, unless the proxy provides for a longer period.

        11. Notice of Stockholder Business. At an annual or special meeting of
the stockholders, only such business shall be conducted as shall have been
properly brought before the meeting. To be properly brought before a meeting,
business must be (a) specified in the notice of meeting (or any supplement
thereto) given by or at the direction of the Board of Directors, (b) properly
brought before the meeting by or at the direction of the Board of Directors, or
(c) properly brought before an annual meeting by a stockholder and if, and only
if, the notice of a special meeting provides for business to be brought before
the meeting by stockholders, properly brought before the special meeting by a
stockholder. For business to be properly brought before a meeting by a
stockholder, the stockholder must have given timely notice thereof in writing to
the Secretary of the corporation. To be timely, a stockholder's notice must be
delivered to or mailed and received at the principal offices of the corporation
no later than (i) in the case of an annual meeting, ninety (90) days before the
anticipated date of the next annual meeting, under the assumption that the next
annual meeting will occur on the same calendar day as the day of the most recent
annual meeting, and (ii) in the case of a special meeting, ten (10) days prior
to date of such meeting. A stockholder's notice to the Secretary shall set


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forth as to each matter the stockholder proposes to bring before the annual or
special meeting (1) a brief description of the business desired to be brought
before the annual or special meeting and the reasons for conducting such
business at the annual or special meeting, (2) the name and address, as they
appear on the corporation's books, of the stockholder proposing such business,
(3) the class and number of shares of the corporation which are beneficially
owned by the stockholder, and (4) any material interest of the stockholder in
such business. Notwithstanding anything in the Bylaws to the contrary, no
business shall be conducted at an annual or special meeting except in accordance
with the procedures set forth in this Section 11. The chairman of an annual or
special meeting shall, if the facts warrant, determine and declare to the
meeting that business was not properly brought before the meeting and in
accordance with the provisions of this Section 11, and if he should so
determine, he shall so declare to the meeting and any such business not properly
brought before the meeting shall not be transacted.

        12. Lost Stock Certificates. The corporation may cause a new stock
certificate to be issued in place of any certificate previously issued by the
corporation alleged to have been lost, stolen or destroyed. The corporation may,
at its discretion and as a condition precedent to such issuance, require the
owner of such certificate to deliver an affidavit stating that such certificate
was lost, stolen or destroyed or to give the corporation a bond or other
security sufficient to indemnify it against any claim that may be made against
it, including any expense or liability, on account of the alleged loss, theft or
destruction or the issuance of a new certificate.

        13. Stock Option Exercise Price. Unless approved by the holders of a
majority of the corporation's shares present and entitled to vote at a duly
convened meeting of the corporation's stockholders, the corporation shall not:
(a) grant any stock options with an exercise price that is less than 100% of the
fair market value of the underlying stock on the date of grant; or (b) reduce
the exercise price of any stock option granted under any existing or future
stock option plan.

        14. Price of Common Stock and Common Stock Equivalents. Unless approved
by the holders of a majority of the corporation's shares present and entitled to
vote at a duly convened meeting of the corporation's stockholders, the
corporation shall not: (a) sell any security of the corporation convertible,
exercisable or exchangeable into shares of the corporation's common stock, par
value $0.01 per share ("Common Stock"), having a conversion, exercise or
exchange price per share which is subject to downward adjustment based on the
market price of the Common Stock at the time of conversion, exercise or exchange
of such security into Common Stock (except for appropriate adjustments made to
give effect to any stock splits or stock dividends); or (b) enter into (i) any
equity line or similar agreement or arrangement; or (ii) any agreement to sell


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Common Stock (or any security convertible, exercisable or exchangeable into
shares of Common Stock ("Common Stock Equivalent")) for cash at a per share
price (or, with respect to a Common Stock Equivalent, at a conversion, exercise
or exchange price, as the case may be ("Equivalent Price")), that is fixed after
the execution date of the agreement, whether or not based on any predetermined
price-setting formula or calculation method. Notwithstanding the foregoing,
however, a price protection clause shall be permitted in an agreement for sale
of Common Stock or Common Stock Equivalent, if such clause provides for an
adjustment to the price per share of Common Stock, or, with respect to a Common
Stock Equivalent, to the Equivalent Price (provided that such price or
Equivalent Price is fixed on or before the execution date of the agreement) (the
"Fixed Price") in the event that the corporation, during the period beginning on
the date of the agreement and ending no later than 90 days after the closing
date of the transaction, sells shares of Common Stock or Common Stock Equivalent
to another investor at a price or Equivalent Price, as the case may be, below
the Fixed Price.

                               BOARD OF DIRECTORS

        15. Number. The number of directors who shall constitute the whole board
shall not be less than five nor more than eight. The exact number of directors
shall be determined from time to time by resolution of the board of directors.


        16. Powers. The business of the corporation shall be managed by or under
the direction of its board of directors, which may exercise all such powers of
the corporation and do all such lawful acts and things as are not by statute or
by the certificate of incorporation or by these bylaws directed or required to
be exercised or done by the stockholders.

        17. Election. Except as provided in Section 16, the directors shall be
elected at the annual meeting of the stockholders by a plurality vote. Each
director elected shall hold office until his or her successor is elected and
qualified. Directors need not be stockholders.


        18. Term of Office and Vacancies. Vacancies and newly created
directorships resulting from any increase in the authorized number of directors
elected by all of the stockholders having the right to vote as a single class
may be filled by a majority of the directors then in office, though less than a
quorum, or by a sole remaining director; whenever the holders of any class or
classes of stock or series thereof are entitled, pursuant to the certificate of
incorporation, to elect one or more directors, vacancies and newly created
directorships of such class or classes or series may be filled by a majority of
the directors elected by such class or classes or series then in office, or by a
sole


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remaining director so elected. The directors so chosen shall hold office until
the next annual election and until their successors are duly elected and shall
qualify, unless sooner displaced. If there are no directors in office, then an
election of directors may be held in the manner provided by statute.

        19. Removal. Unless otherwise restricted by the certificate of
incorporation, bylaws or statute, any director or the entire board of directors
may be removed, with or without cause, by the holders of a majority of shares
entitled to vote at an election of directors.


        20. Resignation. Any director may resign by giving notice to the board
of directors, the Chairman of the Board, the President or the Secretary. The
resignation of a director shall be effective when given unless the director
specifies a later time. The resignation shall be effective regardless of whether
it is accepted by the corporation.


        21. Compensation. Unless otherwise restricted by the certificate of
incorporation or these bylaws, the board of directors shall have the authority
to fix the compensation of directors. The directors may be paid their expenses,
if any, of attendance at each meeting of the board of directors and may be paid
a fixed sum for attendance at each meeting of the board of directors or a stated
salary as director. No such payment shall preclude any director from serving the
corporation in any other capacity and receiving compensation therefor. Members
of special or standing committees may be allowed like compensation for attending
committee meetings.

        22. Committees. The board of directors may, by resolution passed by a
majority of the whole board, designate one or more committees, each committee to
consist of one or more of the directors of the corporation. The board many
designate one or more directors as alternate members of any committee, who may
replace any absent or disqualified member at any meeting of the committee.

        Any committee, to the extent provided in the resolution of the board of
directors, shall have and may exercise all the powers and authority of the board
of directors in the management of the business and affairs of the corporation,
and may authorize the seal of the corporation to be affixed to all papers which
may require it; but no committee shall have the power or authority of the board
of directors in reference to:

                (a) amending the certificate of incorporation (except to the
extent provided in resolutions of the board of directors and permitted by the
General


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Corporation Law of the State of Delaware);

                (b) adopting an agreement of merger or consolidation;

                (c) recommending to the stockholders the sale, lease or exchange
of all or substantially all of the corporation's property and assets; or

                (d) recommending to the stockholders a dissolution of the
corporation or a revocation of a dissolution.

Such committee or committees shall have such name or names as may be determined
from time to time by resolution adopted by the board of directors.

                Each committee shall keep regular minutes of its meetings and
report the same to the board of directors when required.

        23. Time and Place of Meetings and Telephone Meetings. Unless the board
of directors determines otherwise, the board shall hold a regular meeting during
each quarter of the corporation's fiscal year. One such meeting shall take place
immediately following the annual meeting of stockholders. All meetings of
directors shall be held at the principal executive office of the corporation or
at such other place, within or without the State of Delaware, as shall be
designated in the notice of the meeting or in a resolution of the board of
directors. Directors may participate in a meeting through use of conference
telephone or similar communications equipment, provided that all members
participating in the meeting can hear each other.

        24. Call. Meetings of the board of directors, whether regular or
special, may be called by the Chairman of the Board, the President, the
Secretary, any Vice President or any two directors.

        25. Notice. Regular meetings of the board of directors may be held
without notice if the time of such meetings has been fixed by the board and
publicized among all directors. Special meetings shall be held upon four days'
notice by mail or 48 hours' notice delivered personally or by telephone or
telegraph, and regular meetings shall be held upon similar notice if notice is
required for such meetings. Neither a notice nor a waiver of notice must specify
the purpose of any regular or special meeting. Notice of the time and place of
holding an adjourned meeting need not be given to absent directors if the time
and place of the adjourned meeting is announced at the meeting at which the
adjournment is taken, but if a meeting is adjourned for more than 24 hours,
notice of the adjourned meeting shall be given prior to the time of such meeting
to the directors who were not present at the time of the adjournment.


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        26. Meeting Without Regular Call and Notice. The transactions of any
meeting of the board of directors, however called and noticed or wherever held,
are as valid as though had at a meeting duly held after regular call and notice
if a quorum is present and if, either before or after the meeting, each of the
directors not present signs a written waiver of notice. For such purposes, a
director shall not be considered present at a meeting if, although in attendance
at the meeting, the director protests the lack of notice prior to the meeting or
at its commencement.

        27. Action Without Meeting. Any action required or permitted to be taken
by the board of directors may be taken without a meeting, if all of the members
of the board individually or collectively consent in writing to such action.


        28. Quorum and Required Vote. At all meetings of the board a majority of
the total number of authorized directors shall constitute a quorum for the
transaction of business and the act of a majority of the directors present at
any meeting at which there is a quorum shall be the act of the board of
directors, except as may be otherwise specifically provided by statute or by the
certificate of incorporation. If a quorum shall not be present at any meeting of
the board of directors the directors present thereat may adjourn the meeting
from time to time, without notice other than announcement at the meeting, until
a quorum shall be present.

        29. Committee Meetings. The principles set forth in Sections 21 through
26 of these bylaws shall apply to committees of the board of directors and to
actions taken by such committees.

                                    OFFICERS

        30. Titles and Relation to board of directors. The officers of the
corporation shall include a Chairman of the Board or a President or both, a
Secretary and a Treasurer. The board of directors may also choose one or more
Vice Presidents, Assistant Secretaries, Assistant Treasurers or other officers.
Any number of offices may be held by the same person. All officers shall perform
their duties and exercise their powers subject to the direction of the board of
directors.

        31. Election, Term of Office and Vacancies. At its regular meeting after
each annual meeting of stockholders, the board of directors shall choose the
officers of the corporation. The board may choose additional officers or fill
vacant offices at any other time. No officer must be a member of the board of
directors except the Chairman of the Board. The officers shall hold office until
their successors are chosen, except that the board of directors may remove any
officer at any time.


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        32. Resignation. Any officer may resign at any time upon notice to the
corporation without prejudice to the rights, if any, of the corporation under
any contract to which the officer is a party. The resignation of an officer
shall be effective when given unless the officer specifies a later time. The
resignation shall be effective regardless of whether it is accepted by the
corporation.

        33. Chairman of the Board; President. If the board of directors elects a
Chairman of the Board, such officer shall preside over all meetings of the board
of directors and of stockholders. If there be no Chairman of the Board, the
President shall perform such duties. The board of directors shall designate
either the Chairman of the Board or the President as the chief executive officer
and may prescribe the duties and powers of the chief executive officer. If there
is no Chairman of the Board, the President shall be the chief executive officer.

        34. Secretary. Unless otherwise determined by the board of directors or
the chief executive officer, the Secretary shall have the following powers and
duties:


                (a) Record of Corporate Proceedings. The Secretary shall attend
all meetings of stockholders and the board of directors and its committees and
shall record all votes and the minutes of such meetings in a book to be kept at
the principal executive office of the corporation or at such other place as the
board may determine. The Secretary shall keep at the corporation's principal
executive office, if in California, or at its principal business office in
California if the principal executive office is not in California, the original
or a copy of these bylaws, as amended.

                (b) Record of Shares. Unless a transfer agent is appointed by
the board of directors to keep a share register, the Secretary shall keep a
share register at the principal executive office of the corporation showing the
names of the stockholders and their addresses, the number and class of shares
held by each, the number and date of certificates issued and the number and date
of cancellation of each certificate surrendered for cancellation.

                (c) Notices. The Secretary shall give such notices as may be
required by law or these bylaws.



        35. Treasurer. Unless the board of directors designates another chief
financial officer, the Treasurer shall be the chief financial officer of the
corporation. Unless otherwise determined by the board of directors or the chief
executive officer, the


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Treasurer shall have custody of the corporate funds and securities, shall keep
adequate and correct accounts of the corporation's properties and business
transactions, shall disburse such funds of the corporation as may be ordered by
the board or the chief executive officer (taking proper vouchers for such
disbursements), and shall render to the chief executive officer and the board,
at regular meetings of the board or whenever the board may require, an account
of all transactions and the financial condition of the corporation.

        36. Other Officers. The other officers of the corporation, if any, shall
exercise such powers and perform such duties as the board of directors or the
chief executive officer shall prescribe.


        37. Salaries. The board of directors shall fix the salary of the chief
executive officer and may fix the salaries of other employees of the
corporation, including the other officers. If the board does not fix the
salaries of the other officers, the chief executive officer shall fix such
salaries.

                                  AMENDMENT OF
                                     BYLAWS

        38. Bylaws set forth in paragraphs 13 and 14 above may be amended or
repealed solely by the affirmative vote of a majority of the outstanding shares
entitled to vote. All other Bylaws may be adopted, amended or repealed by the
affirmative vote of a majority of the outstanding shares entitled to vote or by
the board of directors.

As amended 1/02





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