Apparatus and method to electromagnetically shield portable consumer devices
US7482925B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2005 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Dec 17, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07735
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method is provided to shield contactless portable electronic consumer devices such as radio frequency identification devices (RFID), tokens, mini-cards, key fobs, cellular phones, smartcards, etc. from wireless interrogation. In one embodiment, a contactless portable consumer device which includes a first antenna is shielded from unauthorized wireless interrogation with a radio frequency (RF) shield. The RF shield includes electrically conductive, non-ferromagnetic material and is configured to prevent unauthorized data transfer between a second antenna external to the portable consumer device and the first antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.