I think the problem to solve here is repetitive stress injury caused by typing
In this case, I think the problem to solve is ergonomic issues with the keyboards used for typing
They are claiming 200+ wpm on a prototype. Half that speed would put you in the top tier of typists, and the number of people that get anywhere close to 200 is vanishingly small.
It depends on what you’re typing. If you’re coding, it’s probably faster to type `{}[]();|` or 2,450,712 than to say it.
I have some news for you about typing code by hand...
I can't type while simultaneously using another control like a mouse, joystick, tablet. I guess I could overengineer the problem by growing more arms. And even that doesn't solve the problem of mouse pointers having to constantly jump between UI elements and a canvas because they can only be in one place at a time.
I look forward to your typing speed tutorials for arthritis sufferers.