Radio frequency identification (RFID) system that meets data protection requirements through owner-controlled RFID tag functionality
First Claim
1. An RFID tag comprising:
- a transmitter adapted to transmit data to an RFID reader;
a receiver adapted to receive data from the reader;
a memory adapted to store identification data that unambiguously identifies the RFID tag;
a memory adapted to store an internal password;
a memory adapted to store information about an internal state of the RFID tag;
a controller adapted to automatically execute functions if the reader demonstrates knowledge of an internal password stored in the memory adapted to store the internal password or if information stored in the memory adapted to store information about the internal state permits the execution of the functions, and circuitry adapted to change the stored password and/or the internal state in response to a comparison of the internal password to a password received from the reader;
a non-transient and non-rewritable or rewritable memory adapted to store a verification value, and circuitry adapted to determine a test value from two input values and adapted to verify the identification data based on a value received from the reader and the verification value, wherein a result of the verification can be transmitted to the reader.
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Accused Products
Abstract
An RFID tag can include a transmitting device and a receiving device for transmitting data to and receiving data from a tag reader, and the tag can include a memory for storing identification data unambiguously labeling the RFID tag and circuitry which automatically executes functions depending on the fact that: the reader demonstrates knowledge of an internal password in a memory of the tag; and information stored in the memory of the tag for an internal state permits the execution of the function. The tag also includes circuitry for changing the stored password and/or the internal state, in particular depending on a previous comparison of the internal password to one received from the reader.
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Citations
21 Claims
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1. An RFID tag comprising:
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a transmitter adapted to transmit data to an RFID reader;
a receiver adapted to receive data from the reader;
a memory adapted to store identification data that unambiguously identifies the RFID tag;
a memory adapted to store an internal password;
a memory adapted to store information about an internal state of the RFID tag;
a controller adapted to automatically execute functions if the reader demonstrates knowledge of an internal password stored in the memory adapted to store the internal password or if information stored in the memory adapted to store information about the internal state permits the execution of the functions, and circuitry adapted to change the stored password and/or the internal state in response to a comparison of the internal password to a password received from the reader;
a non-transient and non-rewritable or rewritable memory adapted to store a verification value, and circuitry adapted to determine a test value from two input values and adapted to verify the identification data based on a value received from the reader and the verification value, wherein a result of the verification can be transmitted to the reader. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An RFID reader comprising:
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a transmitter adapted to transmit data to an RFID tag;
a receiver adapted to receive data from the tag;
circuitry adapted to detect a first password stored in the tag; and
circuitry adapted to query the tag for data stored in the tag, wherein the transmitter is adapted to transmit a data value to the tag to be processed by the tag and to cause the first password stored in the tag to be changed and change an internal state of the tag, wherein the internal state of the tag determines what identification data stored in the tag can be communicated to a reader.
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16. The reader of claim 16, further comprising:
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a memory adapted to store a second password in the reader; and
circuitry adapted to determine a test value from two input values. - View Dependent Claims (17, 18)
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19. A method for an RFID reader to verify identification data of an RFID tag, the method comprising:
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transmitting a random value from the reader to the tag;
receiving a first test value from the tag at the reader, wherein the first test value is generated by the tag in response to the random value;
transmitting the first test value, the random value, and the identification data to a manufacturer of the product associated with the RFID tag; and
receiving an answer from the manufacturer stating that the identification data is verified, wherein the answer is based on the transmitted first test value, the random value, and the identification data. - View Dependent Claims (20, 21)
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Specification