As the implementation of radio frequency identification, RFID, tagging of pallets and cases for the retail supply chain proceeds, attention is being given to the possibility of RFID tagging for individual retail items. The sale of tagged retail goods gives rise to measures to enhance consumer privacy. Ultra-high frequency tags may be read by wireless means of distances up to around 30 feet (10 meters). High frequency tags also may be read wirelessly, but generally at a shorter range.
Mechanisms have been proposed to address enhanced consumer privacy upon the introduction of item-level tagging. One of them is the use of “Blocker Tags” [1] proposed by RSA Laboratories, a security and privacy organization. These tags interfere with the reading of other RFID tags. They must be carried by the consumer. Another mechanism is the EPCglobal Gen2 protocol “Kill” command [2] which deactivates tags permanently. The Kill command is executed by the retailer at the point-of-sale. Killed tags cannot be revived.
By: Paul A. Moskowitz; Andris Lauris; Stephen S. Morris
Published in: RC24023 in 2006
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