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Authentication system with visual encryption using polarisation of light

  • US 20060115082A1
  • Filed: 11/17/2003
  • Published: 06/01/2006
  • Est. Priority Date: 12/16/2002
  • Status: Abandoned Application
First Claim
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1. An authentication system including a plurality of optical authentication devices and at least one inspection device;

  • each optical authentication device including an optical layer including a representation of a first image visually encrypted under control of an encryption key, where the encrypted first image uniquely identifies the respective authentication device; and

    the inspection device being operative to decrypt the optical layer of the optical authentication device under control of the encryption key and to visualize the first image to enable verification of the unique identification of the authentication device.

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