Just my wife and I. We are having breakfast and I showed her your comment, nearly spit her food out. Good times all round.
Technology can be made to assist every disability just about. Have you seen or heard of anyone using this technology in the wild? What was that? Did you say no? Right, thats the same as us. Because apart from edge cases, pilot schemes or the-guy-on-the-internet-trying-to-win-internet-points, it isn't being used.