What would you do if you had a THIRD thumb? Robotic prosthetic allows people to open bottles, pick up objects and even peel a banana with one hand

Human hands have had 10 digits for millions of years. But it seems scientists at the University of Cambridge don't think this is quite sufficient. The experts have created the'Third Thumb' – a controllable prosthetic that attaches to edge of the right hand. It lets wearers pick up objects, open drinks bottles, sift through playing cards, peel a banana and even thread a needle – all with just one hand. In their study, human volunteers quickly got used to the extra digit – which could'advance our motor capabilities beyond current biological limitations'. The Third Thumb is worn on the opposite side of the palm to a person's real thumb and controlled by a pressure sensor placed under each big toe.