| 摘要 |
The invention is directed to a location tracking device and auxiliary device for tracking individuals or objects. The location tracking device has position determining circuitry and wireless circuitry that communicates position data representative of the location of the tracking device to an auxiliary device. The auxiliary device has long range communications circuitry that communicates this position data to a remote location. In the disclosed embodiment, the tracking device has a first operational mode, when communication is not established with the auxiliary device, wherein the position determining circuitry is maintained in a normal power state. The tracking device also has a second operational mode, when communication is established between the tracking device and the auxiliary device, wherein the position determining circuitry is placed in a reduced power state if one or more predetermined conditions are met. |
