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Optical Medium with Added Descriptor to Reduce Counterfeiting

  • US 20100214894A1
  • Filed: 01/27/2010
  • Published: 08/26/2010
  • Est. Priority Date: 02/20/2009
  • Status: Abandoned Application
First Claim
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1. A method for providing authenticity information associated with an optical medium to reduce counterfeit duplication of the optical medium, comprising:

  • adding a descriptor having plural descriptor elements to the optical medium, the descriptor being produced with an intent of providing at least one data-level region having a feature that produces indeterminate interpretations when read plural times;

    reading the descriptor from the optical medium and forming reference descriptor information based on the descriptor;

    producing authenticity information based on the reference descriptor information; and

    providing the authenticity information for use by a verification site.

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