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Distributed system for responding to watermarked documents

  • US 20020112165A1
  • Filed: 03/29/2002
  • Published: 08/15/2002
  • Est. Priority Date: 05/19/1999
  • Status: Active Grant
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1. A method for validating an admission ticket to an event comprising, inserting a digital watermark in said ticket, said digital watermark including unique watermark data, registering said unique data with a registration sever when said ticket is sold, transferring said registered information to a second server, validating said ticket when the ticket is presented for entry to said event, said validation being via a local area network connection to said second server to determine if the unique data in the ticket presented for validation is registered on said second server.

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