A biometric verification system for controlling access is provided that
does not rely on a non-biometric discriminator, such as a PIN or magnetic
card, to convert a one-to-many verification task to a one-to-one
verification task. The system enrolls authorized users by obtaining
digitized fingerprint templates from them and storing them in a database.
Video cameras and fingerprint sensors are provided for use in
authenticating persons seeking access. Software compares a digital
representation of a captured human facial image with stored facial images
in a database of facial images, generating a match confidence therefrom
and rank-ordering the database from highest to lowest match confidence.
The software then compares captured human fingerprints with stored
fingerprint templates associated with the rank-ordered database to verify
the identity of the person and provide an output signal indicative of
recognition.