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Authentication watermarks for printed objects and related applications

  • US 20020012445A1
  • Filed: 02/02/2001
  • Published: 01/31/2002
  • Est. Priority Date: 07/25/2000
  • Status: Active Grant
First Claim
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1. A system for authenticating a printed object comprising:

  • a watermark decoder for detecting a copy detection watermark in a printed object to determine whether the printed object has been reproduced; and

    a verification module for processing a message decoded from an authentication watermark on the printed object to authenticate the printed object or bearer of the printed object.

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