The manipulation of the computer is done through the active head. Features: High-speed sensor, high precision, no need to wear any mark, easy to operate, suitable for patients with flexible heads to achieve all operations on the computer .Through the active head, no need to calibrate. Function: writing, body feeling, voice help, all-round desktop Applicable people: High paraplegia, Motor neurone disease (ALS), Cerebral palsy, Stroke aphasia.