Completely unacceptable as an input method for anybody with any level of typing proficiency. I can type couple words during the time it would take to input one

Completely unacceptable as an input method for anybody with any level of typing proficiency. I can type couple words during the time it would take to input one character... Also, while typing 10 characters per second visual elements stop working. When I make a mistake and visual signal has to reach my brain and be recognised I have typically already typed half a dozen characters.