Patent ID: 8195192

Claim:
A portable tracking device, comprising (a) a wireless communication module; (b) a GPS module; (c) a radio beacon; and (d) at least a primary power supplier and a secondary power supplier; wherein said portable tracking device is either in a standby mode in which said GPS module, wireless communication module, and radio beacon consume substantially no energy or in an operation mode which entails substantially more energy consumption and said wireless communication module, said GPS module and said radio beacon are in connection with a microprocessor having a timer which turns on said tracking device from said standby mode to said operation mode in a predetermined time interval; wherein said portable tracking device has a first operation configuration and a second operation configuration; wherein when in said first operation configuration said wireless communication module, said GPS module and said radio beacon are in connection to and powered by neither said primary power supplier nor said secondary power supplier and when in said second operation configuration said wireless communication module, said GPS module and said radio beacon are in connection to and powered by said primary power supplier either simultaneously or at different times; and wherein said timer is in connection to and powered by said secondary power supplier and is configured to trigger a change of said portable tracking device from said first operation configuration to said second operation configuration in a predetermined time interval.