A third thumb? Our changing attitudes to human enhancement

"Now after wearing it on and off for so long, I do feel like it is an extension of my hand," says Dani Clode, a Royal College of Art student who created a "third thumb" as part of her MA dissertation project. "This is a similar kind of feeling to driving, or using a sewing machine. You don't think about putting your foot down after a while, you think about moving forward and your foot just goes down." Completed earlier this summer, the Third Thumb Project consists of a 3D-printed prosthetic thumb, which is attached to the user's hand, while a bracelet receives signals from a bluetooth device that detects movements in the wearer's foot. To operate the thumb, the wearer just has to press down with one of their feet.