On: Sophisticated OS X Backdoor Discovered

[cptskippy]

That's how it should be however that's not how it is for all web cameras. I don't know specifics about Apple.

[nitrogen → cptskippy]

Note to anyone developing a new webcam: if you want to be able to flash your LED to indicate something to the user, add another color, and keep the main LED tied to the power line (ideally with a hardware-implemented delayed shutoff on the power so a single-frame grab lights the LED for a long time).