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Digital signature collection and authentication

  • US 8,970,561 B2
  • Filed: 09/09/2013
  • Issued: 03/03/2015
  • Est. Priority Date: 05/25/2001
  • Status: Expired due to Term
First Claim
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1. A method for authenticating a digital representation of a signature, the method comprising:

  • at a first computer, generating a digital representation of a new signature and packetizing the digital representation of the new signature; and

    sending the packetized digital representation of the new signature to a second computer, to enable the second computer to authenticate the new signature by comparing the new signature with a digital representation of a known signature, wherein;

    the digital representation of the new signature comprises shape data, speed data, and pressure data;

    the shape data for the new signature identifies a signature shape for the new signature, based on ultrasonic signals associated with a tip of an implement used to form the new signature;

    the speed data for the new signature identifies different velocities or accelerations of the tip of the implement used to form the new signature at different times during creation of the new signature;

    the pressure data for the new signature identifies different amounts of pressure used at different times during creation of the new signature; and

    the operation of packetizing the digital representation of the new signature comprises including, as part of the digital representation of the new signature, at least one item from the group consisting of (a) location data for the first computer and (b) identity data for the first computer.

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