Patent ID: 8593257
Filing Date: 2013-11-26
Classification: G06K,H04Q

Abstract:
1. A Radio Frequency Identification (RFID)-based loss-prevention system comprising: a first RFID reader configured to write an item identifier (II) to an RFID tag attached to an item, if the II is lacking from the RFID tag, and to write an ownership code (OC) to the RFID tag attached to the item, if the OC is lacking from the RFID tag; a second RFID reader configured to write a digital signature (DS) to the RFID tag authorizing the item to be removed from a facility, wherein the DS is derived in part from one of a secret key and a private key associated with the facility; and a third RFID reader configured to verify the DS at an exit location of the facility if the OC is associated with the facility.