I'd even be willing to put in the effort to learn a completely new set of finger gestures for typing, provided it was ergonomic and had equivalent speed to a ke

I'd even be willing to put in the effort to learn a completely new set of finger gestures for typing, provided it was ergonomic and had equivalent speed to a keyboard after an initial learning curve. Even something like an American Sign Language interpreter would be amazing... and could learn to speak to deaf people, to boot.