One of the problems with artificial hands is that they prevent the user from touching. Therefore, it is almost impossible to know how much force must be applied when performing an action. For example, if you squeeze an object not hard enough, it will simply fall out of your hand, and if you overdo it, you can crush it.
A group of researchers at the Massachusetts Institute of Technology has achieved significant success - they managed to create an artificial limb that can sense touch. To do this, they connected sensors to the nerve endings of a human hand.
The system is a unique interface with 20 sensors embedded in the prosthesis that transmit touch impulses. According to one of the test volunteers, thanks to the novelty, he was able to feel objects and change the force of squeezing-unclenching, which in some parameters was very close to the sensations of a human hand.