Robotic prosthetic hands are getting smarter all the time. Take the BrainCo Dexus Robotic Hand for instance: it learns unlimited gestures using AI algorithms and is smart enough to sense what you want to do through sensors in your limb.
The BrainCo Dexus bionic hand weighs 5lbs and uses 6 sensors on the skin to read and understand the user’s intent. Thanks to a fully-opposable thumb combined with three robotic joints on each finger, users can experience natural movement. Training a new gesture can be done in 15 minutes.