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Methods and apparatus for restricting access of a user using a cellular telephone

  • US 20020177433A1
  • Filed: 05/24/2001
  • Published: 11/28/2002
  • Est. Priority Date: 05/24/2001
  • Status: Active Grant
First Claim
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1. A method for restricting access of a user to a restricted item, said method comprising the steps of:

  • providing a token to said user using a first communication channel;

    instructing said user to enter said provided token using a cellular telephone that has been previously associated with said user; and

    providing access to said user if said entered token matches said provided token and is received from a cellular telephone having a serial number previously associated with said user.

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