Anonymous and ephemeral tokens to authenticate elevator calls
US10319160B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2017 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Dec 1, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
According to one or more embodiments, a system and method for authorizing a user securing an elevator call in a building is provided. For example, the method includes receiving, at a mobile device, a secure authorization token that includes an expiration time, connecting the mobile device to a backend system using the secure authorization token from the mobile device, verifying, using the backend system, an authenticity of the secure authorization token from the mobile device based on at least the expiration time, generating, at the backend system, a secure access token and a random number in response to the authenticity of the secure authorization token being verified, and receiving, at the mobile device, the secure access token and the random number for use making elevator call requests.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.