The US Defense Advanced Research Projects Agency (DARPA) promotes research efforts to enable protheses near humane or in some way even better. So they try to connect them with human cerebral cortex to deliver information from brain to the protheses and also back again! So people can control protheses only by thoughts and will get sense impressions like the structure of a touched surface. The video (especially the first half) impressions were impressive to me:
Unfortunately there can be negative deployments but let’s think about all the good things which can be done with that technology! A lot of people can live a better life just because they will be able to do normal things.
[exhibitions.cooperhewitt.org: Modular Prosthetic-limb System]