In an earlier iteration of the web page they had really cool examples of controlling sliders, radial dials, panning surfaces, highly specific pinch gestures etc

In an earlier iteration of the web page they had really cool examples of controlling sliders, radial dials, panning surfaces, highly specific pinch gestures etc. All of those have been removed and now it's just waving. It's cool tech and requires solving lots of hard problems, but it's a shame it falls so short of the initial vision.