Exhibit 32.2

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of CompuDyne Corporation (the "Company")
on Form 10-Q for the period ended June 30, 2004 accompanying this  certification
and filed with the  Securities  and Exchange  Commission on the date hereof (the
"Report"),  I, Geoffrey F. Feidelberg,  Chief Financial  Officer of the Company,
certify, to the best of my knowledge,  pursuant to ss. 906 of the Sarbanes-OxleY
Act of 2002, 18 U.S.C. ss. 1350, that:

         1. The Report fully complies with the  requirements of section 13(a) or
15(d) of the Securities Exchange Act of 1934; and

         2. The  information  contained in the Report  fairly  presents,  in all
material  respects,  the  financial  condition  and results of operations of the
Company.

Date: July 30, 2004

                                            /s/ GEOFFREY F. FEIDELBERG
                                            -----------------------------
                                            Geoffrey F. Feidelberg
                                            Chief Financial Officer



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