Automated device access
US8826415B2 · kind B2 · utility
24Cited by
6References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 4, 2012 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Sep 7, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of unlocking a locked device includes receiving a device identifier over a wireless communication protocol, determining if the device identifier is associated with a list of trusted devices, transmitting a request to generate an acoustic signal over the wireless communication protocol based on the determination, receiving the acoustic signal as an audio sound generated external to the locked device, estimating a distance between a source of the audio sound and the locked device, and unlocking the locked device based on the estimation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.