A method includes a reading-in step in which at least one sensor signal is read in via an interface to a sensor disposed in the vehicle, the sensor signal representing at least one current parameter of the electronic device and/or of the driver in the vehicle. The method furthermore includes a comparing step in which the sensor signal is compared with at least one stored utilization signal that represents a utilization of the electronic device by the driver while driving the vehicle. The method further includes an outputting step in which a detection signal is outputted if a predetermined correlation exists between the sensor signal and the utilization signal, in order to indicate the detected utilization of the electronic device.