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Information management system with authenticity check

  • US 6,836,555 B2
  • Filed: 12/22/2000
  • Issued: 12/28/2004
  • Est. Priority Date: 12/23/1999
  • Status: Expired due to Term
First Claim
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1. A product comprising at least one authentication writing area which is adapted to receive handwritten authentication information from a user and which is provided with a specifically assigned personal subset of an absolute position-coding pattern, which codes coordinates for a plurality of points on an imaginary surface, said subset allowing digital recording and reproduction of the handwritten authentication information as well as authenticity checking.

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