<PAGE>
EXHIBIT 23.1
CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
We hereby consent to the incorporation by reference in the prospectus
constituting a part of this registration statement of our report dated February
4, 2000 relating to the financial statements of Viisage Technology, Inc. (the
"Company") appearing in the Company's Annual Report on Form 10-K for the year
ended December 31, 1999.
We also consent to the reference to us under the caption "Experts" in the
prospectus.
/s/ BDO Seidman, LLP
Boston, Massachusetts
January 10, 2001