Patent ID: 6901263

Claim:
A method for operating a locating device for remote location of an object, where the locating device comprises a mobile communication unit and is arranged to be placed together with the object, where data concerning the communication unit's position are determined and registered by means of existing infrastructure in a cellular network of which the communication unit forms a part when it is activated, and where the communication unit can be activated to a standby mode and deactivated to a sleep mode, characterized in that the communication unit is activated and deactivated depending on a time-variable signal, generated in the locating device, thus reducing the communication unit's average power consumption, the time-variable signal is influenced by the locating device's acceleration, the communication unit is activated when the said signal indicates that the acceleration exceeds a first threshold value, or when the signal indicates that the acceleration has been less than a second threshold value in a first period, preferably in the range 1 to 30 minutes, and that the said threshold values and/or periods can be altered as a response to a message received by the communication unit.