Authentication of physical entities
US10475271B2 · kind B2 · utility
0Cited by
7References
46Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2016 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Jan 26, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D25/29
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An authentication device (20) comprises one or more flakes of a substantially two-dimensional material (14). The one or more flakes of the substantially two-dimensional material (14) have an operative area configured to emit, by non-resonant photoluminescence, electromagnetic radiation with a property that varies with position in the operative area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.