Robust computing device identification framework
US10652365B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2016 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Mar 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3236
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A client device is tracked over a period of time using “refresh tokens” that are exchanged in conjunction with routine client-server communications. Each communication cycle between client and server includes a refresh token that is recorded at the server. The recorded refresh tokens are mapped to both server- and client-generated device identifiers. As communications between client and server occur, a chain of tokens, one for each communication cycle, is progressively recorded at the server. If the server receives a token that is outdated with respect to that which is otherwise expected based on the progression of the recorded chain, this suggests that the received communication was transmitted from a device that is a clone of another client device. A more robust device identification framework is therefore achieved by using a combination of device identifiers and tokens exchanged between client and server.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.