Authentication using DTMF tones
US10397398B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 2018 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Jan 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2203/6081
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of obtaining and automatically providing secure authentication information includes registering a client device over a data line, storing information and a changeable value for authentication in subsequent telephone-only transactions. In the subsequent transactions, a telephone call placed from the client device to an interactive voice response server is intercepted and modified to include dialing of a delay and at least a passcode, the passcode being based on the unique information and the changeable value, where the changeable value is updated for every call session. The interactive voice response server forwards the passcode and a client device identifier to an authentication function, which compares the received passcode to plural passcodes generated based on information and iterations of a value stored in correspondence with the client device identifier. Authentication is confirmed when a generated passcode matches the passcode from the client device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.