UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 12b-25

                           NOTIFICATION OF LATE FILING

                                               Commission File Number: 000-15235
                                               Cusip No.: 6067-10-200

(Check One)

|X| Form 10-K |_| Form 20-F |_| Form 11-K

|_| Form 10-Q |_| Form N-SAR

For Period Ended: September 30, 2004

|_| Transition Report on Form 10-K

|_| Transition Report on Form 20-F

|_| Transition Report on Form 11-K

|_| Transition Report on Form 10-Q

|_| Transition Report on Form N-SAR

For the Transition Period Ended:________________________________________________

      Read Instruction (on back page) Before Preparing Form. Please Print or
Type.

      Nothing in this form shall be construed to imply that the Commission has
verified any information contained herein.

      If the notification relates to a portion of the filing checked above,
identify the Item(s) to which the notification relates:_________________________

________________________________________________________________________________

                                     PART I
                            REGISTRATION INFORMATION

      Full Name of Registrant: Mitek Systems, Inc.

      Former Name, if applicable:_______________________________________________

________________________________________________________________________________

Address of Principal Executive Office (Street and Number):

                      114145 Danielson St., Suite B, Poway
                      Poway, California 92064
                      (858) 513-4600



                                     PART II
                             RULES 12b-25(b) AND (c)

      If the subject report could not be filed without unreasonable effect or
expense and the registrant seeks relief pursuant to Rule 12b-25(b), the
following should be completed (Check box if appropriate).

      (a)   The reasons described in reasonable detail in Part III of this form
            could not be eliminated without unreasonable effort or expense;

|X|   (b)   The subject annual report, semi-annual report, transition report on
            Form 10-K, 10-KSB, 20-F, 11-K, Form N-SAR, or portion thereof, will
            be filed on or before the fifteenth calendar day following the
            prescribed due date; or the subject quarterly report of transition
            report on Form 10-Q, 10-QSB or portion thereof will be filed on or
            before the fifth calendar day following that prescribed due date;
            and

      (c)   The accountant's statement or other exhibit required by Rule
            12b-25(c) has been attached, if applicable.

                                    PART III
                                    NARRATIVE

      State below in reasonable detail the reasons why the Form 10-K, 10-KSB,
20-F, 11-K, 10-Q, 10-QSB, NSAR, or the transition report, or portion thereof,
could not be filed within the prescribed time period. (Attach Extra Sheets if
Needed).

      The Registrant requires additional time to finalize the review and
processing of its Form 10-K for the fiscal year ended September 30, 2004.

                                     PART IV
                                OTHER INFORMATION

      (1) Name and telephone number of person to contact in regard to this
notification:

             James B. DeBello, President and Chief Executive Officer
             (858) 513-4600

      (2) Have all other periodic reports required under Section 13 or 15(d) of
the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act
of 1940 during the preceding 12 months (or for such shorter) period that the
registrant was required to file such reports) been filed? If answer is no,
identify reports:

                                |X| Yes  |_| No

      (3) Is it anticipated that any significant change in results of operations
from the corresponding period for the last fiscal year will be reflected by the
earnings statements to be included in the subject report or portion thereof?

                                |X| Yes  |_| No

      If so, attach an explanation of the anticipated change, both narratively
and quantitatively, and, if appropriate, state the reasons why a reasonable
estimate of the results cannot be made.

      The registrant cannot reasonably estimate its results until it has
completed its review and processing of its financial statements for the fiscal
year ended September 30, 2004.




                               MITEK SYSTEMS, INC.
- --------------------------------------------------------------------------------
                   Name of Registrant as Specified in Charter

      Has caused this notification to be signed on its behalf by the undersigned
hereunto duly authorized.

Date December 29, 2004                  By /s/ James B. DeBello
                                           -------------------------------------
                                           James B. DeBello, President and
                                           Chief Executive Officer

      Instruction: The form may be signed by an executive officer of the
registrant or by any other duly authorized representative. The name and title of
the person signing the form shall be typed or printed beneath the signature. If
the statement is signed on behalf of the registrant by an authorized
representative (other than an executive officer), evidence of the
representative's authority to sign on behalf of the registrant shall be filed
with the form.

                                    ATTENTION

      Intentional misstatements or omissions of fact constitute Federal Criminal
Violations (See 18 U.S.C. 1000).