Sprayable sensors make any surface interactive By David Nield

Imagine touching the armrest of your sofa to change the channel on your television, or pressing against a lightbulb stencil on the wall to turn on your smart light – these functions and many more like them are now possible thanks to research from a team from the Computer Science and Artificial Intelligence Laboratory (CSAIL) at MIT, and the University of Bristol and the University of Bath in the UK.