Patent ID: 6243039
Filing Date: 2001-06-05
Classification: G01S,G08B,H04L

Abstract:
A communications system that enables a first party to track the current and historical locations of a device carried by a second party, said device comprising:a portable device to be carried by said second party, said device transmitting a first data signal having geographical coordinate data and device information data in response to one of a plurality of input signals;a central control system having at least one wireless receiver/transmitter for receiving said first data signal from said portable device;first means for periodically generating one of said plurality of input signals to enable said central control system to receive a plurality of first data signals over time, which plurality enables said central control system to store history data relating to any geographical movement of said second party;second means for enabling said first party to interrogate said central control system to determine the present geographic coordinates of said second party, and to review said history data relating to the prior geographical movements of said second party, said second means including an internet web server, whereby a person having authorized access to said web server may obtain current geographical coordinates and history data of said second party.