Patent ID: 8907765
Filing Date: 2014-12-09
Classification: G06K,G08B

Abstract:
1. An RFID tag detection method comprising: transmitting, in a predetermined area, a predetermined number of RFID tag request signals; determining that an RFID tag is positioned within the predetermined area based on a comparison of a count of zero or more received RFID tag response signals from the RFID tag with the predetermined number of RFID tag request signals, wherein a RFID tag response signal consists of a single identifier unique with respect to other RFID tags positioned within the predetermined area, and wherein the determining step comprises reading the single, unique identifier; repeating the determining step at the predetermined location for each unique RFID tag from which an RFID tag response signal is received, wherein repeating the determining step is based solely on the comparison; and storing a count of the unique RFID tags determined to be positioned within the predetermined area.