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Method of securing a deactivation of a rfid transponder

  • US 20050212662A1
  • Filed: 04/09/2003
  • Published: 09/29/2005
  • Est. Priority Date: 04/30/2002
  • Status: Abandoned Application
First Claim
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1. A method of securing a transponder against undesirable manipulation, which transponder is combined with a product, contains a product code which is significant for the product, and is constructed for wireless communication with a communication station, in which method at least one change of state is carried out, the transponder being set, during a first step of the method involving a first state of change, from an initial state to a first safety state when the product undergoes a transfer from a first product location area to a second product location area, via a safety state activation zone which includes a communication station, and in which method, if the transponder has been set to the first safety state due to the transfer, the transponder is set to a second safety state, if desired, during a second step of the method in which a second change of state is carried out.

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