A handset for controlling a device having a plurality of movable parts defining a support, or a movable surface, the handset comprising a housing, a touchscreen display on a front face of the housing, the touchscreen display being adapted to display an image representative of a device or surface to be controlled, and a control system within the housing which is connected to the touchscreen display, wherein the control system comprises an input module which is adapted to receive an input command in the form of a gesture drawn on the touchscreen display, and an output module which is adapted to generate an output control signal, associated with the input command, for transmission to the device or surface.
