First time hearing about this product and watching the video. Beautiful video and well articulated, though was that guy doing yoga in jeans? ;) I couldn't get

First time hearing about this product and watching the video. Beautiful video and well articulated, though was that guy doing yoga in jeans? ;) I couldn't get my head around how it would work. How does selection work? Is it proximity to the thing you want to control? For me the video was a little too abstract. Maybe it would have just made sense if I was in the IoT space.