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Secure Documents With Hidden Signals, and Related Methods and Systems

  • US 20080130945A1
  • Filed: 10/23/2007
  • Published: 06/05/2008
  • Est. Priority Date: 05/08/1995
  • Status: Active Grant
First Claim
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1. A printed security document, the security document comprising artwork including a security pattern, characterized in that the security pattern has the form of a line structure in which line width and/or line spacing is adjusted to carry predefined data, the artwork is generated by the modifying at least one color of at least a part of the artwork to embed the security pattern in the artwork.

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  • 7 Assignments
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