Verification of a security document
US11068681B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 13, 2017 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Feb 21, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30176
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for verifying a security document by means of a reading device wherein first transmission and/or reflection properties of a first region of the security document are detected in a first spectral range by the reading device and a first data set specifying these properties is generated therefrom, wherein the first region at least in some regions overlaps an optical security element arranged on the security document or embedded in the security document and wherein second transmission and/or reflection properties of the first region of the security document are detected in a second spectral range by the reading device and a second data set specifying these properties is generated therefrom, wherein the first spectral range differs from the second spectral range, and wherein, the authenticity of the security document and/or of the security element is checked on the basis of at least the first data set and the second data set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.