Facility control methods and apparatus
US11462095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2020 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Dec 23, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A security system includes a physical sensor for determining presence of a first number of users within a detecting region, short-range readers for determining presence of a second number of authorized smart devices in response to ephemeral tokens, wherein the users may remain anonymous to the short-range readers, authentication servers for determining ephemeral tokens for smart devices in response to identifiers of the readers and the smart devices, a physical output device configured to provide a user detectable output, and a processor for determining whether the first number of users is different from the second number and for directing the physical output device to provide the user detectable output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.