<PAGE>
                                                                    EXHIBIT 31.2

                                  CERTIFICATION

I, Michael Carrosino, certify that:

1.       I have reviewed this annual report on Form 10-KSB of Pacific
Biometrics, Inc.

2.       Based on my knowledge, this report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this report.

3.       Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects the
financial condition, results of operations and cash flows of the registrant as
of, and for, the periods presented in this report.

4.       The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and we have:

                  a.       Designed such disclosure controls and procedures, or
         caused such disclosure controls and procedures to be designed under our
         supervision, to ensure that material information relating to the
         registrant, including its consolidated subsidiaries, is made known to
         us by others within those entities, particularly during the period in
         which this report is being prepared;

                  b.       Evaluated the effectiveness of the registrant's
         disclosure controls and procedures and presented in this report our
         conclusions about the effectiveness of the disclosure controls and
         procedures, as of the end of the period covered by this report based on
         such evaluation.

                  c.       Disclosed in this report any change in the
         registrant's internal control over financial reporting that occurred
         during the registrant's most recent fiscal quarter that has materially
         affected, or is reasonably likely to materially affect, the
         registrant's internal control over financial reporting; and

5.       The registrant's other certifying officers and I have disclosed, based
on our most recent evaluation of internal control over financial reporting, to
the registrant's auditors and the audit committee of the registrant's board of
directors (or persons performing the equivalent function):

                  a.       All significant deficiencies in the design or
         operation of internal controls over financial reporting which are
         reasonably likely to adversely affect the registrant's ability to
         record, process, summarize and report financial information ; and

                  b.       Any fraud, whether or not material, that involves
         management or other employees who have a significant role in the
         registrant's internal control over financial reporting.

Date: September 26, 2003
                                                       /s/ Michael Carrosino
                                                      --------------------------
                                                      Michael Carrosino
                                                      Chief Financial Officer