Two stage radio frequency identification
First Claim
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1. A method comprising:
- decoding first signals received at a first interrogator from an item tag to determine at least an item identifier;
decoding second signals received at a first interrogator from an identification tag to determine at least an owner identifier;
causing a signal to be sent from the first interrogator to the item tag to change an ownership indicator in the item tag; and
decoding third signals received at a second interrogator from the item tag to determine at least the ownership indicator.
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Abstract
Two levels of RFID interrogation may be used to provide verification.
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Citations
27 Claims
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1. A method comprising:
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decoding first signals received at a first interrogator from an item tag to determine at least an item identifier;
decoding second signals received at a first interrogator from an identification tag to determine at least an owner identifier;
causing a signal to be sent from the first interrogator to the item tag to change an ownership indicator in the item tag; and
decoding third signals received at a second interrogator from the item tag to determine at least the ownership indicator. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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sending a first interrogation signal from a first interrogator to a product tag for a product and to a customer tag;
receiving first return signals from the product tag;
receiving second return signals from the customer tag;
decoding the first and second return signals to determine information including at least an ownership status of the product and customer information;
completing a transaction based at least in part on the information;
sending a write signal to the product tag to change the ownership status for the product included in the transaction;
sending a second interrogation signal from a second interrogator to the product tag;
receiving a third return signal from the product tag; and
decoding the third return signal to determine at least the ownership status of the product. - View Dependent Claims (7, 8, 9, 10, 11)
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12. An apparatus, comprising:
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a first interrogator including an antenna adapted to transmit read and write signals to an RFID tag and to receive first tag signals from the RFID tag responsive to the read signal, the write signal including an instruction the change an ownership indicator in the RFID tag;
a second interrogator including an antenna adapted to transmit second read signals requesting the ownership indicator from the RFID tag and to receive second tag signals responsive to the read signal from the RFID tag; and
a controller adapted to receive the first tag signals from the first interrogator, to decode the first tag signals to determine the ownership indicator, to instruct the first interrogator to send the write signal to the RFID tag if a transaction is completed, to receive the second tag signals from the second interrogator, and to decode the second tag signals to determine the ownership indicator. - View Dependent Claims (13, 14, 15)
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16. An apparatus, comprising:
a controller adapted to receive first tag signals from an item tag via a first interrogator, to decode the first tag signals to determine ownership information, to send a write signal to the item tag via the first interrogator altering the ownership information if a transaction is completed, to receive second tag signals from the item tag via a second interrogator, and to decode the second tag signals to determine the ownership information. - View Dependent Claims (17, 18, 19)
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20. A machine readable medium that provides instructions, when executed by a computing platform, cause said computing platform to perform operations comprising a method of:
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causing a first interrogator to send a first interrogation signal to a product tag and to a customer tag;
decoding first return signals from the product tag and second return signals from the customer tag to determine information including at least an ownership status of the product and customer information;
completing a transaction based at least in part on the information;
causing the first interrogator to send a write signal to the product tag to change the ownership status for the product included in the transaction;
causing a second interrogator to send a second interrogation signal to the product tag; and
decoding a second return signal in response to the second interrogation signal to determine at least the ownership status of the product. - View Dependent Claims (21, 22, 23)
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24. A machine readable medium that provides instructions, when executed by a computing platform, cause said computing platform to perform operations comprising a method of:
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decoding first signals from a first interrogator including item information from an item tag to determine at lest an item identifier;
decoding second signals from the first interrogator including customer information from a customer tag to determine at least an owner identifier;
controlling the first interrogator to send a write signal to the item tag to change an ownership indicator in the item tag based on the owner identifier;
decoding third signals including the item information from a second interrogator to determine at least the ownership indicator. - View Dependent Claims (25, 26, 27)
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Specification