07202814 is referenced by 129 patents and cites 65 patents.

A telecommunications device includes a positioning controller (504) adapted to determine positioning information for said telecommunications device; and a wireless communications controller (502) adapted to receive said positioning information from said positioning controller and cause said positioning information to be transmitted to an associated administration device (104/152; 2-122) when said telecommunications device is determined to be out of a predetermined range.

Title
System and method for presence-based area monitoring
Application Number
10/672439
Publication Number
7202814 (B2)
Application Date
September 26, 2003
Publication Date
April 10, 2007
Inventor
William J Beyda
Cupertino
CA, US
Rami Caspi
Sunnyvale
CA, US
Assignee
Siemens Communications
FL, US
IPC
G08B 25/00
G01S 5/14
View Original Source