Secure transaction card and verification system

Details Secure transaction card and verification system Secure transaction card and verification system

G - Physics

07

F

283/23

G07F 7/12 (2006.01) G06K 19/14 (2006.01) G07F 7/08 (2006.01) G07F 7/10 (2006.01)

Patent

CA 1223614

SECURE TRANSACTION CARD AND VERIFICATION SYSTEM Abstract of the Disclosure An identification card is disclosed as for supporting commercial or other significant transactions involving a designated subject. The card incorporates a machine-readable record and includes a composition to characteristically modulate a light beam for individual card identification. In one embodiment, the card incorporates light-changing crystals (e.g. polaroid) to modulate a light beam. The machine-readable record on the card indicates: the light beam modulation, a coded personal identification for the subject card bearer, and a time-related value criterion involving use for the card. Systems are disclosed for variously sensing card characteristics by modulated light including polarized light techniques and from different aspects.

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