Silent caller ID verification using callback request
US11019203B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2019 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Feb 27, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2203/6045
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are embodiments of systems, methods, and products comprises an authentication server for caller ID verification. When a caller makes a phone call, the server receives the phone call and verifies whether the phone call is from a registered device associated with the phone number. The server queries the registered device to retrieve one or more current call states via an authentication function on the registered device. The server compares the states and/or state transitions to the observed states and/or state transitions of the phone call. If the registered device states and/or state transitions match the observed phone call states and/or state transitions, the server verifies that the phone call is from the registered device and not some imposter's device. If there is no such match, the server rejects the phone call before the call phone is connected or terminates the phone call after the phone call is connected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.