Verifying integrity of physical documents
US9922278B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2016 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Aug 15, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
For ensuring the integrity of a physical document, an apparatus is disclosed. A system, method, and program product also perform the functions of the apparatus. The apparatus for ensuring the integrity of a physical document includes a processor, a memory that stores code executable by the processor. The processor identifies an integrity symbol within a physical document, the first integrity symbol representative of content of the physical document, and converts the integrity symbol into an integrity map having at least two values, the integrity symbol being a symbolic representation of the integrity map suitable for printing. The processor compares content of the physical document to the integrity map to verify integrity of the physical document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.