RFID tag and RFID tag communication distance modification method
US7834743B2 · kind B2 · utility
14Cited by
18References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2005 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Feb 15, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07767
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
It is possible to prevent an unauthorized read-out from both active tags and passive tags. Antenna emission is turned on and off by using a switch, or attenuated by using a resistor. A part of the antenna may be chipped. With these configurations, it is possible to lower the emission level of the antenna thus preventing an unauthorized read-out of important information from a remote reader.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.