Method and system for verification and authentication using optically encoded QR codes
US9785789B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Apr 8, 2015 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Apr 8, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3226
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical security method for object authentication using photon-counting encryption implemented with phase encoded QR codes. By combining the full phase double-random-phase encryption with photon-counting imaging method and applying an iterative Huffman coding technique, encryption and compression of an image containing primary information about the object is achieved. This data can then be stored inside of an optically phase-encoded QR code for robust read out, decryption, and authentication. The optically encoded QR code is verified by examining the speckle signature of the optical masks using statistical analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.