I've already written about motion controls, so I don't want to repeat a lot of what I said back then, but right now we've moved past simple motion controls. (toy-tma.com)
This is certainly more reliable than simple motion detection, which can be fooled by light changes or the movement of far - off tree branches. (digitaltrends.com)
Everything that is changing around and within us — from the relatively simple motion of celestial bodies, to weather and complex biological processes — is a dynamical system. (sciencedaily.com)