Method and apparatus for verifying a hologram and a credit card
US7672475B2 · kind B2 · utility
6Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2004 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Feb 28, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/0032
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method for verifying a hologram, comprising the steps of reading at least two images of the hologram, the images being representative of images derived at respective different viewing angles, comparing a characteristic derived from the respective images with a reference characteristic to establish if the hologram is authentic, and outputting a signal indicative of the authenticity or otherwise of the hologram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.