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Portable electronic authorization system and method

  • US 20050060586A1
  • Filed: 09/30/2004
  • Published: 03/17/2005
  • Est. Priority Date: 09/28/1999
  • Status: Abandoned Application
First Claim
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1. An apparatus, comprising:

  • a memory that stores at least first and second distinct codes;

    a user input that permits a user to select any one of the at least first and second codes for transmission in response to a wireless interrogation signal; and

    a transponder that emits a wireless signal representing the selected one of the at least first and second codes in response to an interrogation signal.

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