1. A method of controlling a component system depending on the position of a user relative to at least two components from among a plurality of components in the component system at which a pointing device comprising a camera is being aimed, the method comprising: aiming by the user of a pointing device at a target area containing at least part of the at least two components of a component system comprising a plurality of components; generating image data representing the target area at which the pointing device is being aimed; analysing the image data to identify the at least two components appearing partially or completely in the target area at which the pointing device is being aimed; analysing the image data to determine position information pertaining to a position of the user relative to the at least two identified components and/or relative positions of the components appearing partially or completely in the target area at which the pointing device is being aimed; and controlling the component system according to the user position information.