Patent ID: 8289129
Filing Date: 2012-10-16
Classification: G01S,G06K

Abstract:
1. A method for locating Radio Frequency Identification (RFID) tags, said method comprising: a passive RFID tag A receiving a polling command previously transmitted from a RFID reader and addressed to another passive RFID tag B; said RFID tag A determining that the polling command is not addressed to the RFID tag A; in response to the RFID tag A determining that the polling command is not addressed to the RFID tag A, at a time t said RFID tag A receiving at a time t said RFID tag A determining a distance (D.t said RFID tag A ascertaining that the distance D.t responsive to said ascertaining, said RFID tag A storing the identification of the RFID tag B and the distance D.t