RFID Tracking

Abstract

A method of communicating with one or more RFID sensor tags within a predetermined area. The method comprises: providing an RFID sensor tag interrogation apparatus comprising an RF transceiver configured to enable control of a transmitted RF power level; setting the transmitted RF power level to provide an RF signal detectable by RFID sensor tags located within a corresponding region of the predetermined area; transmitting, by the RFID sensor tag interrogation apparatus, an RFID sensor tag interrogation signal; and receiving, by the RFID sensor tag interrogation apparatus, one or more responses transmitted by the RFID sensor tags located within the predetermined area. In some embodiments the transmitted RF power level is adjusted to increase or decrease the size of the corresponding region of the predetermined area, based upon responses received from RFID sensor tags located within the region.

Dependencies are inferred from the claim text.