Secure credit card
US6641050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2001 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jan 9, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q20/4097
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
Credit card or portable identification cards containing smart card technology and electronic fuse (e-fuse) technology are combined with an LFSR pseudo random number generator to provide a secured method to prevent fraud and unauthorized use. Secure personalization via e-fuses, a pseudo-random number generator linear feedback shift register, free running clock oscillator, and power source embedded in the card provide a highly secured method to render a lost or stolen card useless. A unique card ID is permanently encoded within the card which requires a specific activation code to activate the card. A PIN number permits the card owner to activate the card for a predetermined length of time while processing a transaction. The card dynamically generates random code sequences and synchronization keys to secure a transaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.