Patent ID: 8587810
Filing Date: 2013-11-19
Classification: G01S,H04W

Abstract:
1. A system, said system comprising a second device, said second device configured to perform a method for providing an indication of the proximity of a device, said method comprising: said second device receiving from a first moveable device a transmission of an identification of the first moveable device; said second device transmitting data including the received identification of the first moveable device together with an indication of the proximity of the first moveable device from the second device, said transmitted data being received by a third moveable device in order for the third moveable device to obtain an indication of the proximity of the first moveable device; after the first moveable device has moved out of a receiving range of the second device, said second device measuring an amount of time elapsed since the first moveable device has moved out of the receiving range of the second device.