The Vocal Joystick is a research project that holds much promise. Speech recognition for computer control can be a frustrating affair even today. I loved playing the microphone controlled game Seaman on the Sega Dreamcast where you rear a half-man/half-fish creature, but half the time he didn't have a clue what I was saying. The Vocal Joystick gets over the recognition problems it seems by relying upon the user making more simple vocalisations rather than actual words. If that doesn't make sense, take a look at the video demonstrations for more - especially the Voicebot clip.