LCD disc shows baby temperature

A disappearing smile could help save the lives of thousands of babies across the developing world, its makers say. The smile is seen on a disc stuck onto the skin which monitors temperature. When babies are warm enough, mothers will see a green spot with a smile - but if they are too cold, the smile disappears and the spot turns black. The LCD disc has an adhesive back, so it can be stuck securely onto the skin.

Source: 27 February 2007