I find that idea spooky. I haven't given up books yet, because I like the feel of a book and the weight in my hands. I need the tactile sensation of a book. I think it would be the same (in my opinion) for a keyboard.

I'd be surprised if someone could touch-type with it. Since the fingers would only move when reaching from their normal positions, how would it detect the "typing" of the asdfjkl; keys? The lack of tactile feedback could reduce performance time and increase errors... And, it requires a flat surface to work on... I'd like to see a demo.