Patent ID: 8502669

Claim:
An RFID device comprising: a data memory; an electronic circuit arrangement coupled to the data memory, the electronic circuit arrangement having a first operational configuration and a second operational configuration; and a communication interface coupled to the electronic circuit arrangement, wherein, in response to a control command, the electronic circuit arrangement is configured to be switched irreversibly from the first operational configuration to the second operational configuration, wherein, in the first operational configuration, the RFID device is configured to communicate with a standard RFID reader via the communication interface, wherein, in the second operational configuration, the communication with the standard RFID reader is disabled and the RFID device is configured to communicate with a readout-RFID device by irreversibly switching from an inductive coupling mode to a capacitive coupling mode, and wherein the electronic circuit arrangement comprises a switch configured to modify an operating frequency of the RFID device by disconnecting an operation capacitor from an oscillating circuit.