They used eyebrow muscle activity to obtain required signal. By using the signal the wheelchair
movement has been controlled as the movement of the eyebrow was not easier so it had some difficulties. [5]
Used head and finger movement for wheelchair locomotion. In finger movement they use flex sensor, placed on
the finger. It is analog resistors usually in the form of strip long vary resistance. Due to the bending of finger the
resistance varies which controls the locomotion of the wheelchair. Bending the sensor at one point more than 90
may permanently damage the sensor which is a main drawback.