Process as safety concept against unauthorized use of a payment instrument in cashless payment at payment sites
US5478993A · kind A · utility
73Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Jan 18, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/1008
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
The process provides a staggered degree of security as a safety concept against unauthorized use of a transaction card for purchasing of items. The card has four memories memorizing an amount of money, a money installment and its limiting value, a number of usable transactions and its limiting value, further data for doing an identity check of the ownership of the cardholder and also an authenticity check. The card is usable at three different types of payment instruments with or without an identity check and/or an authenticity check.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.