Tamperproof security card
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United States of America Patent
Stats
-
Sep 26, 1989
Grant Date -
N/A
app pub date -
Dec 29, 1987
filing date -
Dec 29, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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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Family
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Cited Art Landscape
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