Card, system and method for securing user identification data
US4138057A · kind A · utility
37Cited by
2References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1977 |
| Grant date | Feb 6, 1979 |
| Priority date | — |
| Expiry date | Jul 8, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/257
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A card having randomly-oriented optical fibers, and a system having a card reader for reading the card and having a keyboard for entering secret user-identification data, are disclosed for securing the user-identification data entered into the system. The system includes a logic unit for controlling the keyboard, and for applying data to the card via the card reader. The card operates in conjunction with the logic unit of the system to transform the applied data and to improve the security of said data. A method of fabricating said card and a method of securing entered data using said card are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.