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Digital watermarking for identification documents

  • US 20040158724A1
  • Filed: 10/14/2003
  • Published: 08/12/2004
  • Est. Priority Date: 04/30/2001
  • Status: Active Grant
First Claim
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1. A method of verifying an age of a bearer of a document, the document comprising auxiliary data steganographically embedded in the document, wherein the auxiliary data comprises at least an age indicator and a biometric indicator, said method comprising the steps of:

  • receiving first digital data corresponding to the age indicator;

    receiving second digital data corresponding to the biometric indictor;

    receiving third digital data corresponding to a biometric sample, wherein the biometric sample corresponds to the bearer; and

    verifying the bearer'"'"'s age when;

    i) the first digital data indicates that the bearer is at least as old as a predetermined age, and ii) the second digital data and the third digital data correspond.

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