Method, computer program, processing device, and user device controller for controlling a user device

Examples relate to a method, a computer program, a processing device, and a user device controller for controlling a user device. The method (10) for controlling the user device (26) comprises assigning (12) a first mode from a plurality of modes to a user, detecting (14) a first gesture from a plurality of gestures of the user, affecting (16) a control action at the user device based on the first gesture and based on the first mode, and detecting (18) a second gesture and assigning a second mode from the plurality of modes to the user based on the second gesture. An effect of the first gesture (on the user device) is different in the second mode.