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Two stage radio frequency identification

  • US 20050134449A1
  • Filed: 12/18/2003
  • Published: 06/23/2005
  • Est. Priority Date: 12/18/2003
  • Status: Abandoned Application
First Claim
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1. A method comprising:

  • decoding first signals received at a first interrogator from an item tag to determine at least an item identifier;

    decoding second signals received at a first interrogator from an identification tag to determine at least an owner identifier;

    causing a signal to be sent from the first interrogator to the item tag to change an ownership indicator in the item tag; and

    decoding third signals received at a second interrogator from the item tag to determine at least the ownership indicator.

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