Back to results
US 9,852,317 B2Granted
Printable, writeable article for tracking counterfeit and diverted products
AssigneePalo Alto Research Center Incorporated
InventorsMichael Kuniavsky, Paula M. Te, Shantanu Rane
Life of this patent
Estimating the term…
Abstract
An article includes a writeable memory printed on a substrate, a characteristic of the article usable to derive a seed value, and a value stored in the memory, wherein the value is generated by a hashing process using the seed value. The writeable memory may also be a readable memory, and may store more than one value.
Claims9
An article, comprising:
- a writeable memory printed on a substrate attached to an object;
- a characteristic of the object outside the memory, usable to derive a seed value;
- a value stored in the memory, wherein the value is generated by a hashing process using the seed value, the value being an authentication value;
- and
- a step number stored in the memory, wherein the step number corresponds to the value stored in the memory.
2 more elements
Dependencies are inferred from the claim text.