UTD is studying how to implant devices without the usual scaring and other problems. It would be even better if devices like this prosthetic did not require brain implants.
“Within a week, Scheuermann could reach in and out, left and right, and up and down with the arm, giving her three-dimensional control. Within three months, she added flexing the wrist back and forth; moving it from side to side; rotating it clockwise and counter-clockwise, and gripping objects, to give her control in seven dimensions.”
“The Halting Progress of Mind-Controlled Robot Tech”