A computer input device for medically impaired users of computers

Introduces a novel computer input device capable of receiving input by processing the images of the scene viewed by a camera; i.e. there is no need for any physical contact. The user of this input device can use any part of his body to issue a computer command. The system described is a cursor-positioning input device. In addition to cursor-positioning commands it also provides a simulated keyboard to allow users to input text without using the physical keyboard. The system described has been successfully built; preliminary experience in using the system has been very encouraging.<
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