Exchanging messages between devices for communication within group, e.g. for motorcycle riders, receives messages and evaluates to obtain positions of other devices and displays on screen

摘要

A processor belonging to the device creates messages using position data (8) determined by a positioning module, such as a GPS module. These messages are transmitted to at least one further device via a radio interface. Messages are received from the further device via the radio interface. The received messages are evaluated to obtain position data of further devices. The position data obtained are displaced on a screen.