Apparatus and method to distinguish nominally identical objects through wave fingerprints apparatus and method to distinguish nominally identical objects through wave fingerprints
US8624605B2 · kind B2 · utility
1Cited by
8References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2008 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Nov 28, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2218/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention exploits extreme sensitivity to initial conditions in ray-chaotic enclosures to create a method to distinguish nominally identical objects through their unique “wave fingerprints.” The fingerprint can be measured through transmission of a pulsed microwave signal as a function of carrier frequency and time. When internal components are re-arranged, the Electromagnetic Fingerprints (EMF) changes in significant ways. The EMF can be detected by direct injection measurements of the enclosure or through remote measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.