System and method for selectively reading RFID devices

A system for detecting radio-frequency identification (RFID) devices, the system comprising:

• an RFID device reader for detecting the RFID devices within a designated area;
• and
• a pair of jamming signal transmitters on opposite sides of the designated area, to prevent detection of RFID devices outside of the designated area;
• wherein the jamming signal transmitters include a pair of low-frequency field generators;
• and
• wherein the generators generate low-frequency signals in opposite phase relative to one another.

A method for selectively detecting radio-frequency identification (RFID) devices, the method comprising:

• using jamming signal transmitters to inhibit operation of RFID devices outside of a designated area;
• and
• detecting RFID devices within the designated area;
• wherein the using the jamming signal transmitters includes generating low-frequency signals from a pair of low-frequency field generators on opposite sides of the designated area;
• and
• wherein the generating includes generating low-frequency signals from one of the generators that is opposite in phase to low-frequency signals of the other of the generators.