Counterfeit prevention
US10607234B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2015 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Oct 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/80
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Generating a uniquely authentic copy of information uses a physical device that consistently produces unpredictable outputs based on inputs and the microstructure of the device. The device is verified to satisfy a given property. It is substantially difficult to manufacture another device that satisfies the given property and that produces a particular output in response to a particular input. Generating the uniquely authentic copy of information includes causing the device to be provided with a specific input to produce a specific output, causing the generation of a digital signature of the response and the information, and causing at least the device and the digital signature to be made available. Generating the uniquely authentic copy of information may also include making available the information, the specific input, and/or the specific output. The information may be a value of a banknote. The digital signature may be produced on behalf of an issuer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.