> I can see that a camera cover works Well, I don't mean to fuel your paranoia, but there are materials opaque to the human eye but not necessarily fully opaqu

> I can see that a camera cover works Well, I don't mean to fuel your paranoia, but there are materials opaque to the human eye but not necessarily fully opaque to a CMOS sensor, especially one without infrared/UV filters. It would be quite possible, trivial even, to design a web camera with a nice built-in black camera cover -- which is transparent to the camera.