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Fingerprinting plain text information

  • US 5,953,415 A
  • Filed: 03/25/1996
  • Issued: 09/14/1999
  • Est. Priority Date: 03/25/1996
  • Status: Expired due to Term
First Claim
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1. A computer-implemented method of fingerprinting an electronic document comprising the steps of:

  • providing a user identifier to identify one or more recipients of said electronic document;

    identifying a text segment of said electronic document that has at least two alternative character strings that have substantially the same meaning; and

    modifying said text segment of said electronic document, said modifying step includes selecting one of said alternative character strings for said text segment in accordance with said user identifier.

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