CONSUMABLE IDENTIFIER
First Claim
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1. A consumable product, comprising:
- a machine-readable storage medium storing a unique identifier for verifying authenticity of the consumable product, the unique identifier comprising a random portion generated by a random number generator, a time frame portion indicating a time period when the unique identifier was generated, and an integrity check portion to verify integrity of the unique identifier.
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Abstract
A consumable product can have an identifier stored on a circuit or machine-readable medium. The identifier can be used to verify the authenticity of the consumable product. The integrity of the identifier can be verified based on an integrity check portion of the identifier.
26 Citations
20 Claims
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1. A consumable product, comprising:
a machine-readable storage medium storing a unique identifier for verifying authenticity of the consumable product, the unique identifier comprising a random portion generated by a random number generator, a time frame portion indicating a time period when the unique identifier was generated, and an integrity check portion to verify integrity of the unique identifier. - View Dependent Claims (2, 3, 4, 5, 13, 14, 15, 16, 17, 18, 19, 20)
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6. A method of manufacturing unique identifier circuits for consumable products for checking authenticity of the consumable products, comprising:
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maintaining a database of unique identifiers generated during a time period; and for each unique identifier circuit to be manufactured during the time period; generating a unique identifier comprising a time frame portion specifying the time period, a random number portion, and an integrity check portion, for checking integrity of the unique identifier; verifying that the unique identifier is not present in the database for the time period; and if the unique identifier is not present in the database, storing the unique identifier in the database and in a unique identifier circuit for a consumable product. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification