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Digitally watermarking holograms for identity documents

  • US 20030210805A1
  • Filed: 06/18/2003
  • Published: 11/13/2003
  • Est. Priority Date: 12/21/2000
  • Status: Active Grant
First Claim
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1. A method of providing security for an identity document, wherein said identity document comprises electronic circuitry, said method comprising:

  • providing a holographic structure to be applied to a surface of the identity document, wherein the holographic structure comprises a digital watermark embedded therein, the digital watermark comprising at least a spread spectrum modulated message;

    providing first information so as to correspond with the message; and

    storing the first information in the electronic circuitry of the identity document.

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