Writing apparatus controlled by head movements for motor handicapped people

For a motor disabled person who cannot use his arms and hands we have constructed a device that enables him to operate a typewriter by means of head movements, via a forehead lamp. The text is first displayed on a picture screen and, after introducing any corrections, typed on a printer. This writing apparatus has been used very intensively for one year now, and evaluation laid down by the user himself has been included in the present paper. Several factors relevant to a large-scale application of this apparatus are discussed.