The Habr:

EpiChild :
Using voice recognition to control a computer, and even more so as replacing the keyboard is a deadborn idea. <...> But the keyboard as a way to enter a large amount of information also has its age. Instead of a keyboard, several cameras could be used to track all the movements of the fingers, recognize them and enter the relevant information into the memory. No need for a keyboard. On certain gestures could be hanged the call of the necessary applications. Also, quick switching between the simulated keyboard and track pain. The workplace is hygienic again.

ega25: Ugu, sit and not move. You scratch the nose, format the disk.