Here is a bionic fingertip that connects to nerves in the arm, bringing the sense of touch to amputees. Designed for touch-enabled prosthetics, this solution allows amputees to feel rough or smooth textures in real-time.
The fingertip has a miniaturized sensor with electrical signals that are converted into spikes to stimulate the nerves of the subject. It could make life easier for a lot of people. More information is available here.