A radio-frequency identification (RFID) and an electronic article
surveillance (EAS) tag includes an RFID device and an EAS device. The
RFID device may operate in a plurality of states including an activated
state in which communication with a reader is enabled and a deactivated
state in which communication with a reader is disabled. The EAS device
may operate in a plurality of states including an activated state in
which activation of an alarm is enabled and a deactivated state in which
activation of an alarm is disable. The RFID device may be deactivated
when the EAS device is deactivated. For example, the same piece of
equipment that deactivates the EAS device also deactivates the RFID
device at the same time. The RFID device may include an antenna, an RFID
chip connected to the antenna for communicating with a reader, and an
active element operatively disposed with respect to the antenna. The
active element, which may include a conductive strip or lead, may have an
activated state in which the antenna is enabled for communicating with a
reader in a far field and a deactivated state in which the antenna is
disabled from communicating with a reader in a far field. In addition,
the EAS device may include a magnetic resonator and a bias magnet. When
activated, the bias magnet may cause or affect the resonator to resonate
and the active element to be in the activated state. Further, when
deactivated, the bias magnet may cause the active element to be in the
deactivated state.