Mechanically and reversibly activating or deactivating a radio frequency
identification (RFID) data tag. An RFID tag includes an RFID chip for
storing an RFID code, an antenna for communicating a radio frequency (RF)
signal, and a mechanical switch coupling the RFID chip to the antenna.
Closing the mechanical switch enables the RFID chip and the antenna to
communicate the RFID code via the RF signal.