Jerome Wischerop, David B Ferguson, Jorge F Alicot, G Mark Shafer: Combined article surveillance and product identification system. Sensormatic Electronics Corporation, Robin Blecker & Daley, September 21, 1999: US05955951 (270 worldwide citation)

A combined article surveillance and product identification system is formed of conventional elements, of which some are modified. Included in the system are conventional EAS detection equipment, hard EAS tags with RFID circuitry installed in the hard tag enclosure, a tag detaching device modified to ...

G Mark Shafer: Rfid reader output control apparatus and method. Sensormatic Electronics Corporation, feng pu, June 11, 2003: CN01808099 (1 worldwide citation)

An apparatus and method is provided for determining if an object is within a maximum radius for reading an RFID marker from an RFID reader, and controlling the RF output power level of the RFID reader based upon the measured SWR of the transmitted RF signal. The RFID interrogation signal is transmit ...