Lord Drayson launches pollution sensor powered by radio waves
by Ian Sample Science editor from Technology | The Guardian on (#P1ST)
Businessman and Labour party donor's FreeVolt project uses ambient wireless and mobile network waves to power CleanSpace tag for app designed for cyclists and pedestrians
Lord Drayson, the millionaire businessman, Labour party donor and former science minister, has released a pollution monitor that he hopes will drive efforts to improve air quality around the world.
The gadget is designed to be carried in a pocket and is powered by a new technology which constantly harvests energy from the ambient radio waves that mobile phone and wireless networks emit. As such, its battery never needs replacing.
