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System and method for authenticating an electronically transmitted document

  • US 4,064,389 A
  • Filed: 06/23/1976
  • Issued: 12/20/1977
  • Est. Priority Date: 06/23/1976
  • Status: Expired due to Term
First Claim
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1. A system for transmitting electronically from an input point to a remote output point the contents of a document which includes a machine-readable text and for authenticating that document by means of a card containing an authentication mark in digitized machine readable form, comprising in combination:

  • means at said input point for optically scanning said text of said document and for producing corresponding electronic signals;

    means for reading from said card digitized signals corresponding to said authentication mark and for producing electronic signals corresponding thereto;

    means at said output point adapted to be coupled to said scanning means and said card reading means and when so coupled receptive of said signals corresponding to said text and to signals corresponding to said mark for producing a document containing the same text as that contained in said document at said input point, and containing said mark authenticating said document.

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