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Method and apparatus involving global positioning and long-range wireless link using a tag

  • US 8,665,088 B2
  • Filed: 11/09/2005
  • Issued: 03/04/2014
  • Est. Priority Date: 11/19/2004
  • Status: Active Grant
First Claim
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1. An apparatus comprising a tag comprising:

  • a transmitter for transmitting first wireless signals; and

    a receiver for receiving second wireless signals from which said tag can determine its current physical location;

    wherein said tag includes a memory that stores a database containing information for identifying a plurality of known readers, that can each receive said first wireless signals, and for identifying the physical location of each of the known readers.

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