I hate to sound paranoid and alarmist, but... (Score 1)

With a half-meter resolution, you can see my shadow. You see it as only a couple of pixels, depending on what time of day. You can't get much information from a shadow. You can't identify me as me, because I'm only two or three pixels. But... What if they develop some way of compensating for turbulence and radiation? I know this delves into chaos theory and all, but... What if? Then, there are ways of seeing me now. You just have to get closer. A telephoto lens can read the time on my watch from a mile. Never mind satellites. They can't get much out of a blob and a shadow. But the government (and corporations. And individuals.) can observe me through other, much more detailed methods.