Object authentication using embossed hidden images
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United States of America Patent
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Jun 12, 2012
Grant Date -
Aug 10, 2006
app pub date -
Mar 10, 2006
filing date -
Nov 29, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An authenticatable object comprises a surface having a latent hidden image embossed therein. The latent image is an encoded version of an authentication image and comprises a plurality of elements applied to the surface with a predetermined frequency. The latent hidden image is configured for optical decoding by a decoder having a decoder frequency corresponding to the predetermined frequency.
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