Method and system for authentication and anti-counterfeiting using coffee-ring effect
US11386436B2 · kind B2 · utility
0Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2020 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Mar 25, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06178
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system providing an anti-counterfeiting label or mark, using ordinary inkjet printers, take advantage of a phenomenon called a coffee ring pattern, something that inkjet printers. Even the same inkjet printer can output different patterns under different conditions. As a result, the likelihood of reproduction of a particular printer's coffee ring pattern using another printer is so low as to be negligible. It is possible to capture images of the coffee rings using a smartphone camera. The coffee ring approach may be used on any labels or packages on which inkjet printing can be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.