Two stage read-write method for transaction cards
US5559885A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1994 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Feb 22, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method for providing convenient, secure access to numerous benefits with a single wallet sized card having a high capacity data storage area, preferably an optical stripe, and a lower capacity magnetic storage stripe. The high capacity area is indelibly written with data denoting a set of entitlements and records of the owner of the card. To obtain use of the entitlements, the owner takes the card to a data conversion terminal and selects a set of entitlements from a menu displayed at the terminal and, provided that the selected set is a subset of the entitlements indelibly recorded on the high capacity area of the card, data is written on the magnetic stripe of the card authorizing use of the selected entitlements. The data written on the magnetic stripe can be used to obtain benefits at numerous existing and foreseeable magnetic stripe readers. If the selected set of entitlements is not a subset of those indelibly recorded, suggesting that the possessor of the card is not the owner of the card, such writing of data on the magnetic stripe is prevented, denying use of the card to obtain benefits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.