Forget blowing into a breathalyser – a new drink-driving test could involve putting on a pair of ear defenders.
Koji Toma at Tokyo Medical and Dental University in Japan and his colleagues have created a device that captures alcohol given off by the skin of a person’s ears. It can measure the amount of alcohol in their blood and whether they are over a legal limit.
Breathalyser tests for alcohol used by many police forces require blowing steadily into a device for several seconds, and some people can’t manage this, or claim they can’t. A skin-based test solved both issues. “They can’t cheat through their skin,” says Toma.
Toma and his team had previously investigated…