Patent ID: 7619525
Filing Date: 2009-11-17
Classification: G07G

Abstract:
1. A method of providing security utilizing radio frequency identification (RFID) tagged items exiting a retail establishment, said retail establishment comprising an exit, at least one checkout counter, a first RFID reader, a second RFID reader, and a processor server comprising a security module that includes an exit queue, said first and second RFID readers being operatively connected to the security module, said security module being configured to respectively add or delete RFID tag values of a RFID tagged item to or from the exit queue upon the RFID tagged item being within a reading range of the first or second RFID reader, said method comprising: reading a RFID tag value of a RFID tagged item being checked out at a first checkout counter of the at least one checkout counter in a purchasing transaction for the item, said reading the RFID tag value being performed by the first RFID reader; adding the RFID tag value read by the first RFID reader to the exit queue; after completion of the purchasing transaction for the item, reading the RFID tag value at the exit by the second RFID reader; after said reading the RFID tag value by the second RFID reader, ascertaining whether the RFID tag value is in the exit queue; if said ascertaining ascertains that the RFID tag value is in the exit queue then deleting the RFID tag value from the exit queue, otherwise raising a security alert.