Controlling smartphones by a simple swipe of your hand is the latest innovation to be introduced to phone owners. However, radar sensors with higher accuracy would take the concept from gimmick to practical usefulness, according to researchers at Lund University in Sweden. They have developed a method that could detect much finer gestures – while also using a lot less power – opening up to new applications in the future, and to simpler ways of using the feature for consumers. With a trained network, an extremely high accuracy in the gesture classification is verified.