http://news.bbc.co.uk/2/hi/health/6083994.stm'The system, detailed in New Scientist, is not yet fully accurate, but experts said it showed the technology was "within reach".'
IMNSHO, the main problem of automatic translation is the accuracy of the translations, not whether you have to say the words out loud, or can say them silently, as with this new device, or type them.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)