Patent ID: 8077014
Filing Date: 2011-12-13
Classification: G06K,H04Q

Abstract:
1. A radio frequency identification (RFID) system, comprising: an RFID reader adapted to provide an interrogation signal; and a plurality of RFID tags, at least a first of said RFID tags being positioned to receive said interrogation signal and being adapted to provide at least one first return signal in response to said interrogation signal, at least a second of said RFID tags being adapted to provide a second return signal, said second return signal being encoded with information, associated with said second RFID tag, that is provided to said first RFID tag, said at least one first return signal provided by said first RFID tag being encoded with information resident in said first RFID tag and with said provided information associated with said second RFID tag, wherein said RFID reader is adapted to decode said first return signal to obtain the resident information and associated information encoded therein, and adapted to process said decoded information to identify said second RFID tag as being positioned in indirect communication with said RFID reader, and wherein said associated information is distinguished from said resident information by an identification added to said associated information, said identification usable by said RFID reader to perform said identify of said second RFID tag as being in indirect communication with said RFID reader.