Researchers have demonstrated a device which allows people to have a phone conversation without saying a word. Lip reading technology is involved – or should be, especially on public transport or in eating/drinking houses. And on the subject of mobile phones; I am reminded of the stories we hear of people who were reportedly caught out at times when they were “pretending" to talk on a mobile phone and it rang. These days, with some phones having dual lines, you’d just tell the “caller” you had another call coming in – just by moving your lips. This could have wonderful applications for those who are hearing-impaired as well - rather than just helping reduce all the white noise and other people's conversations associated with mobile phones.