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Call security system

  • US 20040176069A1
  • Filed: 03/08/2004
  • Published: 09/09/2004
  • Est. Priority Date: 03/24/1992
  • Status: Abandoned Application
First Claim
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1. A method of determining if a use of a particular unit is fraudulent comprising the steps of, monitoring the use of said particular unit, for a plurality of times that said unit is used, to collect statistics concerning the use of said particular unit over a time period having a specific length to establish a normal usage pattern for said particular unit, said pattern being established over a plurality of uses of said unit, determining if more than a predetermined deviation exits between the use of said unit during a second period of time and said normal usage pattern, taking a first type of action if said deviation is below a first value, taking a second type of action if said deviation is above said first value.

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