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Method and apparatus for preventing wireless fraud

  • US 5,420,908 A
  • Filed: 03/11/1993
  • Issued: 05/30/1995
  • Est. Priority Date: 03/11/1993
  • Status: Expired due to Term
First Claim
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1. A method for use in completing a call from a wireless telephone to its destination, the method comprising the steps of:

  • receiving a request at a mobile switching center of a wireless carrier for wireless telephone service from a wireless telephone having a particular MIN;

    placing a call from said mobile switching center to an authentication platform serving a plurality of wireless carriers so that a voice path exists from said authentication platform through said mobile switching center to said wireless telephone if said particular MIN belongs to a particular predefined group of MINs;

    transmitting a challenge from said authentication platform to said wireless telephone over said voice path; and

    denying said request if a proper response to said challenge is not received.

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