Method for operating a hearing system, hearing system and audio gateway devices

A body-worn audio gateway device (4) transmitting audio signals comprised in close-range electromagnetic signals (10, 34) may be used outside a car, where it may provide for hands-free mobile telephony and listening to music streamed directly to hearing devices (2, 3) worn by a user (8). When the user (8) enters the car, he or she may want to use a corresponding in-car audio gateway device (14) for the same purposes. This typically requires manual interaction e.g. to trigger the switch-over and to maintain hands-free operation of a carried mobile phone (9). Furthermore, the audio gateway devices (4, 14) may disturb each other, which may lead to malfunction, more troublesome interaction and/or reduced audio quality. To overcome this, the invention foresees means for detecting when the user enters and/or leaves the car and for automatically disabling functions of the first audio gateway device (4) when the user (8) is in the car.