A wireless identification device including a housing; circuitry in the housing configured to provide a signal to identify the device in response to an interrogation signal; and a selectively actuated switch supported by the housing and permitting operation of the circuitry only while the switch is actuated....http://www.google.fr/patents/US6380845?utm_source=gb-gplus-shareBrevet US6380845 - Wireless identification device, RFID device, and method of manufacturing wireless identification device
Wireless identification device, RFID device, and method of manufacturing ...
