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Identification System

  • US 20070285210A1
  • Filed: 12/07/2004
  • Published: 12/13/2007
  • Est. Priority Date: 12/29/2003
  • Status: Abandoned Application
First Claim
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1. :

  • A method relating to identification systems in which a transponder reflects an inquiry signal from a communicator, said method comprising the steps of;

    modulating a reflected signal from the transponder with data that can be read by the communicator, including in said modulated data-carrying signal reflected by the transponder a check sum calculated on the basis of data stored in a memory of the transponder, and permanently storing the check sum in the transponder memory.

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