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- The clipped tag is a radio frequency identification (RFID) tag designed to enhance consumer privacy. RFID is an identification technology in which information stored in semiconductor chips contained in RFID tags is communicated by means of radio waves to RFID readers. The most simple passive RFID tags do not have batteries or transmitters. They get their energy from the field of the reader. They transfer their information to the reader by modulating the signal that is reflected back to the reader by the tag. Because tags depend on the reader for power their range is limited, typically up to 10 meters (33 ft) for UHF RFID tags. Today, the public uses RFID tags for many applications including electronic toll collection, E-ZPass for example, or the Speedpass which is used as a credit token for the purchase of gasoline. The retail supply chain uses RFID tags to monitor the passage of pallets and cases at loading dock doors. The expectation for the future is for RFID tags to be used for the labelling of items for retail sale. Concerns for individual privacy have been raised because the RFID tags may be read by invisible radio waves without the knowledge of the holder of the tagged item. The privacy-protecting RFID tag, the “clipped tag” has been suggested by IBM. The clipped tag puts the option of privacy protection in the hands of the consumer. After the point of sale, a consumer may tear off a portion of the tag, much like the way in which a ketchup packet is opened. This allows the transformation of a long-range tag into a proximity tag that still may be read, but only at short range – less than a few inches or centimeters. The modification of the tag may be confirmed visually. The tag may still be used later for returns, recalls, or recycling. The clipped tag was listed among the Wall Street Journal Technology Innovation Winners for 2006. Two US patents were issued for this invention in 2007. Other mechanisms designed to protect privacy for RFID item tagging for retail use are the EPCglobal kill command and the RSA blocker tag. (en)
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- August 2017 (en)
- September 2017 (en)
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- The clipped tag is a radio frequency identification (RFID) tag designed to enhance consumer privacy. RFID is an identification technology in which information stored in semiconductor chips contained in RFID tags is communicated by means of radio waves to RFID readers. The most simple passive RFID tags do not have batteries or transmitters. They get their energy from the field of the reader. They transfer their information to the reader by modulating the signal that is reflected back to the reader by the tag. Because tags depend on the reader for power their range is limited, typically up to 10 meters (33 ft) for UHF RFID tags. (en)
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