Disclosed herein is a control device. The control device includes an interface unit physically connected to a display unit, a control board receiving an input of an occupant, and a camera capturing an image of an area of a body of the occupant and the surroundings of the control board, and a processor exchanging information with the control board, the display unit, and the camera through the interface unit, wherein if it is determined that the occupant is present in the driver's seat through the camera and a first input is received from the occupant through the control board, the processor controls the display unit to display a display area corresponding to a position to which the first input is input on the control board, and when the display area is displayed in the display unit and a second input is received from the occupant through the control board, the processor selects or controls contents displayed in the display area.