Patent ID: 7327858

Claim:
A method for biometric enrollment and authentication of a user, the method comprising the steps of: (a) providing an electro-optic scanner with a planar platen; (b) first placing a user's hand on the planar platen and first scanning the underside of the user's hand; (c) collecting an enrollment image from the underside of the user's hand, (d) detecting a plurality of prominent lines within the contour of the said enrollment, said prominent lines meeting a previously defined minimum for width; (e) storing said enrollment image thereby enrolling the user prior to the biometric authentication; (f) second scanning said user's hand while collecting an authentication image from solely a portion the user's hand; and (g) detecting a plurality of prominent lines within said portion thereby comparing the prominent lines of said authentication image to the corresponding prominent lines within a portion of said enrollment image, thereby performing the authentication.