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Method of signature verification and device for carrying out the method

  • US 4,856,077 A
  • Filed: 01/14/1988
  • Issued: 08/08/1989
  • Est. Priority Date: 04/28/1986
  • Status: Expired due to Fees
First Claim
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1. A method of signature verification, at which an electric pulse train individual for every person in question is generated in that said person is allowed to move a pen, which includes at its nib a light-emitting member and a light-sensitive member, over a background, whereby an electric pulse train is caused to be emitted from the light-sensitive member in response to patterns on said background, and said pulse train generated at a certain occasion is caused by means of a computer, processor or corresponding device to be compared with pulse trains generated earlier, comprising said pen (1) including at its nib a writing pen (14) or a ballpoint pen arranged to leave behind a line that forms said background when the pen is moved against a support capable to write on, such as a paper document, and that said pulse train is generated as a binary pulse train, derived solely from crossover points in said signature when the person at the writing of his/her signature with the pen nib (14) crosses over lines written earlier at the writing with the pen of said signature, such that the signature being written constitutes said background.

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