Patent ID: 6753759
Filing Date: 2004-06-22
Classification: G06K,G08B

Abstract:
A method for operating a transponder which comprises a data memory and means for the contactless interaction with a base station;wherein the transponder is brought into an active field of the base station and by the base station is respectively deactivatable, reactivatable by transferring a command signal, characterised in that before the respective deactivation, reactivation of the transponder the authorisation of the base station for respective deactivation, reactivation is checked, in that from the base station before the transfer of the command signal an admission signal which contains first admission information is transferred to the transponder, the admission signal is received by the transponder and the first admission information with second admission information stored in the data memory is processed by the transponder into authorisation information, and on account of the thus obtained authorisation information, in the transponder it is decided whether the command signal is accepted or rejected.