Area tracking systems and methods of tracking electronic devices
US8867996B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2011 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Aug 23, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Area tracking systems including a plurality of short range sensors that are communicatively connected to a server and methods of tracking electronic devices. The electronic devices are tracked by polling for the electronic devices, the polling including transmission of electronic addresses corresponding to the electronic devices and determining whether a reply to the poling is received. The electronic addresses are each stored on one of a plurality of lists. Each of the lists may be polled at a different frequency and may include a different number of electronic device addresses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.