An ear on your health

The Canaria is a device that's worn behind the ear and can sense for vital signs and alert the wearer about their state of health. A trial of these devices is about to start in mines in Australia, where it will measure for signs of fatigue and send warnings when levels of tiredness reach unsafe levels. Its potential to measure astronauts' health in real time in space has also been recognised by NASA. We speak to Alex Moss, the CEO & head designer of Canaria.