Method and apparatus for dynamic signature verification
US4646351A · kind A · utility
49Cited by
28References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1985 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Oct 4, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/35
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The subject invention relates to a new and improved method of dynamic signature verification. In accordance with the subject invention output signals, generated by a stylus, are normalized such that they are insensitive to the rotational position of the stylus with respect to the writer's grip. In operation, pressure measurements are sampled at discrete intervals and a normalization angle is calculated, representative of the average direction of the signature. Each sample is then assigned a vector length which is rotated by the normalization angle. The normalized samples are utilized to perform signature analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.