Method and apparatus for transaction card security utilizing embedded image data
US6321981A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1998 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Dec 22, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/125
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A highly secure personal identification related document is achieved by having an area which contains machine readable information and also having a printed region having embedded data in the image printed thereon. The machine readable information as recorded has been encoded using a secure hash algorithm. For legitimate personal identification related documents, the machine readable data and the embedded data are identical information. The personal identification related document is used in conjunction with a reader system which includes a reader for the machine readable data, an optical scanner for scanning the image and data embedded therein, and a processor. The machine readable data is delivered to the processor which applies the secure hash algorithm thereto to generate a first data set. The digitized image data retrieved with the optical scanner is also delivered to the processor and the embedded data is retrieved therefrom to generate a second data set. The two data streams are then passed to a comparator to determine if there is an adequate match to verify authenticity of the document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.