SYSTEM AND METHOD FOR DISABLING DATA ON RADIO FREQUENCY IDENTIFICATION TAGS
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Accused Products
Abstract
The disclosed embodiments of the present invention are used to permanently disable or destruct an RFID so that it is no longer possible to read some or all of the data encoded on the RFID tag. In one method for disabling data on a radio frequency identification (RFID) tag, an RFID tag is identified and its identity is confirmed. Verification that a prerequisite event has occurred is obtained, occurrence of which is required prior to disablement of the data. A destruct instruction is transmitted to the RFID tag. The RFID tag verifies that the destruct instruction is valid and disables the data upon verifying validity of the destruct instruction. The tag may disable the data by erasing the data, disabling the data, auto-destructing, or performing any operation that makes the data unreadable.
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Citations
31 Claims
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1-11. -11. (canceled)
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12. A method for disabling at least a portion of a radio frequency identification (RFID) tag for privacy, comprising:
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performing an anti-collision procedure to select a tag from a plurality of tags;
receiving a CRC and an algorithmically calculated instruction by the tag, the tag identifying an item for purchase;
verifying the instruction is valid; and
if the instruction is valid, disabling the at least a portion of the tag to provide privacy after a purchase. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method for disabling at least a portion of a radio frequency identification (RFID) tag, comprising:
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receiving an identification information by a reader antenna;
transmitting a CRC and an algorithmically calculated kill instruction by the reader antenna;
verifying the kill instruction is valid by the tag; and
if the kill instruction is valid, disabling the at least a portion of the tag. - View Dependent Claims (21)
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22. A method for disabling at least a portion of a radio frequency identification (RFID) tag, comprising:
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selecting a tag without performing an anti-collision procedure; and
transmitting a destruct instruction to the RFID tag, whereupon at least a portion of the tag is disabled. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification