IC card having block state of operation and method of providing information security for the same
US7240216B2 · kind B2 · utility
9Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2001 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Sep 29, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Information stored in an IC card which can be set to a block state, where any functions permitted to a user authority holder is not effective and an unblock password is required to set the IC card back to an initial state, is more secured than that stored in an IC card without the block state. The IC card of the present invention is further provided with a counter counting the number of incorrect unblock passwords, and is set to a more secured state of operation where only administrative authority holder can release the IC card.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.