Reader, writer and method for programmable tags
First Claim
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1. A tag security system comprising:
- a tag writer, a tag reader, a programmable tag and a remote data repository, the programmable tag having a unique identifier, the tag writer being configured to generate a security identifier during writing of data to the tag, the security identifier being dependent on one or more of the data written, data already on the tag, metadata associated with the data, the tag and/or the writing of the data, wherein the tag writer is further configured to write the security identifier to the remote data repository, the tag writer being configured to link the security identifier in the remote data repository to the unique identifier, the tag reader being configured to recreate the security identifier during reading of data from the tag, wherein the tag reader is configured to use the unique identifier to verify the security identifier against the security identifier in the remote data repository, the security identifier further being non-recreatable upon changing of predetermined portions of data in the tag.
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Abstract
A tag writer, reader and method are disclosed. The tag writer is operable to generate a security identifier during writing of data to the tag, the security identifier being dependent on one or more of the data written, data already on the tag, metadata associated with the data, the tag and/or the writing of the data.
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Citations
18 Claims
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1. A tag security system comprising:
- a tag writer, a tag reader, a programmable tag and a remote data repository, the programmable tag having a unique identifier, the tag writer being configured to generate a security identifier during writing of data to the tag, the security identifier being dependent on one or more of the data written, data already on the tag, metadata associated with the data, the tag and/or the writing of the data, wherein the tag writer is further configured to write the security identifier to the remote data repository, the tag writer being configured to link the security identifier in the remote data repository to the unique identifier, the tag reader being configured to recreate the security identifier during reading of data from the tag, wherein the tag reader is configured to use the unique identifier to verify the security identifier against the security identifier in the remote data repository, the security identifier further being non-recreatable upon changing of predetermined portions of data in the tag.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for securing a programmable tag, the programmable tag having a unique identifier, the method comprising:
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generating a security identifier during writing of data to the tag, the security identifier being dependent on one or more of the data written, data already on the tag, metadata associated with the data, the tag and/or the writing of the data; storing the security identifier in a remote data repository for future authentication of the tag and security identifier; linking the security identifier in the remote data repository to the unique identifier of the tag; and subsequently authenticating the data on the tag by recreating the security identifier from data on the tag and comparing the recreated security identifier to the stored security identifier in the remote data repository using the unique identifier, wherein the security identifier is non-recreatable upon changing of predetermined portions of the data in the tag. - View Dependent Claims (16, 17, 18)
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Specification