Access control and validation using sonic tones
US11074033B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2018 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Jan 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2250/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Controlled access to a physical area or secured service is managed using sonic tones. A secret key is stored in a user device and in a security system, and then when access is desired, the secret key or a derivative thereof is encoded into a sonic tone which is transmitted. The sonic tone is received and decoded to obtain the encoded binary message, which is then compared to an expected binary message, and if there is a match, access is granted by the security system. In illustrated particular embodiments the secret key is used to generate a one-time password based upon the secret key and a randomizing factor, such as the current time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.