Apparatus and method to provide security for a keypad processor of a transaction terminal
US5832206A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1996 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Mar 25, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/86
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus to provide security for a keypad processor of a transaction terminal includes a secured processor coupled to a keypad and processor of the transaction terminal. The apparatus may operate in a secured or an unsecured mode. In a secured mode, the apparatus prevents the fraudulent acquisition of information, such as personal identification numbers (PIN), entered through the keypad. By encrypting data entered through the keypad, the apparatus prevents the fraudulent acquisition of information transmitted to a processor such as a central computer of a bank. The secured processor provides actual and false sampling of the keypad and simulates keypad data entries to prevent an electronic eavesdropper from determining the actual keypad entries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.