Electronic identification system and method with source authenticity
First Claim
1. An electronic identification system including:
- at least one transponder encoder for writing data into a memory arrangement of a transponder;
a plurality of transponders adapted to receive data from the at least one encoder;
at least one verifier for interrogating a selected transponder and to read data stored in the transponder;
said encoder including means for providing an identification code characteristic of an entity externally of the transponder, to form part of the data to be written into the transponder;
the verifier including computing means for extracting the identification code from the data read thereby and for comparing the code to an authorized code; and
indicator means for giving an indication whether the extracted identification code corresponds to the authorized code.
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0 Petitions
Accused Products
Abstract
An RF electronic identification system (10) is disclosed and claimed. The system includes at least one transponder encoder (14.1) for writing data into a memory arrangement (52) of a selected transponder (1.1) of a plurality of transponders (1.1 to 1.n) adapted to receive data from the at least one encoder. The system further includes at least one verifier (16) for interrogating a selected transponder (1.1) and to read data stored in the transponder. The encoder includes a controller (42) for providing an identification code characteristic of the encoder to form part of the data to be written into the transponder. The verifier includes computing means (56) for extracting the identification code from the data read thereby and for comparing the code to authorized codes. An indicator (18) provides an indication whether the identification code corresponds to any of the authorized codes or not. A method of verifying the authenticity of a transponder is also disclosed and claimed.
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Citations
32 Claims
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1. An electronic identification system including:
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at least one transponder encoder for writing data into a memory arrangement of a transponder;
a plurality of transponders adapted to receive data from the at least one encoder;
at least one verifier for interrogating a selected transponder and to read data stored in the transponder;
said encoder including means for providing an identification code characteristic of an entity externally of the transponder, to form part of the data to be written into the transponder;
the verifier including computing means for extracting the identification code from the data read thereby and for comparing the code to an authorized code; and
indicator means for giving an indication whether the extracted identification code corresponds to the authorized code. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of verifying the authenticity of a transponder, the method including the steps of:
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writing data into the transponder by an authorized transponder encoder;
including in the data, data relating to an identification code of an entity externally of the transponder;
reading the data written into the transponder with a verifier;
extracting from the data read, the data relating to the identification code;
comparing the extracted data to data relating to an authorized identification code for the entity; and
providing an indication whether the extracted data matches the data relating to the authorized identification code. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of programming data into a transponder, the method including the steps of:
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electronically measuring a physical characteristic of the transponder and producing data relating thereto;
utilizing the produced data in an encryption algorithm to encrypt data to be written into the transponder; and
writing the encrypted data into a memory arrangement of the transponder. - View Dependent Claims (32)
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Specification