G - Physics – 07 – F
Patent
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.
438724
Gowling Lafleur Henderson Llp
Light Signatures Inc.
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