The touchscreen display has become the primary means to interact with the graphical user interface (GUI) of the mobile device. A more natural way for people to interact with their surroundings is by making gestures. Not only do hand gestures provide an alternative to touch display applications, they can introduce new ways to interact with surroundings when a touchscreen is not available. This ABI Research webinar looks at how imaging, depth and proximity sensors make free-space gestures possible for computing, home and in-vehicle use.