There’s an intuitive appeal to using controller-free hand-tracking input like Leap Motion’s; there’s nothing quite like seeing your virtual hands and fingers move just like your own hands and fingers without the need to pick up and learn how to use a controller. But reaching out to touch and interact in this way can be jarring because there’s no physical feedback from the virtual world. When your expectation of feedback isn’t met, it can be unclear how to best interact with this new non-physical world. In a series of experiments, Leap Motion has been exploring how they can apply visual design to make controller-free input hand input more intuitive and immersive. Leap Motion’s Barrett Fox and Martin Schubert explain: