Mechanism to verify physical proximity
US8224978B2 · kind B2 · utility
6Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 2009 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | May 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Two participants may observe periodic data sources available only in the vicinity of physical trust (i.e. a wifi beacon). If an initial test of whether each participant has received the same key is passed, each party may hash the periodic source and communicate it to the other over a non-proximal communication channel (an IP network) and both are able to verify that the other (or agent of the other) is within the same vicinity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.