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Information management system with authenticity check

  • US 7,263,225 B2
  • Filed: 08/12/2005
  • Issued: 08/28/2007
  • Est. Priority Date: 05/25/1999
  • Status: Expired due to Fees
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 an optically imaging pen operated by a user and which is provided with a position-coding pattern constructed of a plurality of coded tags, each tag encoding coordinates for a point on a tag map and an orientation feature, said orientation feature enabling the pen to determine a planar orientation of each tag relative to a yaw of the pen, said position-coding pattern allowing digital recording and reproduction of the handwritten authentication information as well as authenticity checking.

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