Tamperproof security card
First Claim
1. A security card comprising an image-containing substrate layer and a transparent layer overlaying said substrate, said transparent layer having a plurality of parallel uniformly-spaced lenticules on the outer surface therof, and said image-containing layer having discrete data-containing bands under and parallel to a plurality of the lenticules of the lenticular layer, said lenticules and said bands positioned with respect to one another such that they function as a lenticular system wherein said discrete bands are selectively visible and not visible as at least one data-containing image when the card is viewed from different angles about an axis of rotation parallel to said lenticules, said at least one data-containing image containing information which distinguishes said card from otherwise similar cards and which is unique to a particular person assigned to said card.
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0 Petitions
Reexamination
Accused Products
Abstract
There is disclosed a unique tamperproof security card comprised of a transparent upper layer having narrow parallel lenses on the outer surface, and an image containing substrate, said two layers forming a lenticular system by which images on the substrate are selectively visible depending upon the angle from which the card is viewed. By incorporating into a selectively visible image the information necessary to verify the identify of the cardholder, e.g. the cardholder'"'"'s photograph or signature, the card may be rendered substantially tamperproof.
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Citations
7 Claims
- 1. A security card comprising an image-containing substrate layer and a transparent layer overlaying said substrate, said transparent layer having a plurality of parallel uniformly-spaced lenticules on the outer surface therof, and said image-containing layer having discrete data-containing bands under and parallel to a plurality of the lenticules of the lenticular layer, said lenticules and said bands positioned with respect to one another such that they function as a lenticular system wherein said discrete bands are selectively visible and not visible as at least one data-containing image when the card is viewed from different angles about an axis of rotation parallel to said lenticules, said at least one data-containing image containing information which distinguishes said card from otherwise similar cards and which is unique to a particular person assigned to said card.
Specification