Locator device useful for house arrest and stalker detection
US5461390A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 1994 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | May 27, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A locator device for monitoring the location of subjects, usable in conjunction with a database system connected to a wireless network, wherein the database system causes a polling signal to be sent periodically to each of the subject's locator devices in the area. The locator device includes a wireless transceiver to receive the polling message and, in response, query a location determination device for the current location of the device. This location is then sent back through the wireless network to the database. The database determines from a record on that particular subject where that subject is supposed to be at that time. If the subject being monitored is not within the area where he or she is supposed to be, then the database may automatically contact law enforcement officials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.