The invention relates to an emblem (80) for a motor vehicle (1), comprising an optical sensor system (30) which is suitable for a) monitoring a detection region (21) lying outside of the motor vehicle (1), b) triggering a signal for starting an authentication check between an ID transmitter (13) and the motor vehicle (1) in the event that a user (10) is detected in the detection region (21), c) monitoring an actuation region (22) which lies outside of the motor vehicle (1) and which differs from the detection region (21), and d) providing an operating signal for the motor vehicle (1) in the event that a user (10) is detected in the actuation region (22).