Signature verification system
US4433436A · kind A · utility
Inventor
Key dates
| Filing date | May 18, 1981 |
| Grant date | Feb 21, 1984 |
| Priority date | — |
| Expiry date | May 18, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/243
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a system for verifying a person's handwritten signature on a travelers check or the like by comparing the signature with a signature previously written by the person whose name is signed, both signatures are written on signature fields on the face of the check. Each field incorporates a similar arrangement of lines of pressure sensitive material that produces visible marks on the back of the check at points at which the lines of the signatures cross lines of the pressure sensitive material. When the patterns of marks thus produced are compared, dissimilarities between the patterns indicates that the two signatures were not made by the same person.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.