> The FaceTime HD camera built into your Mac computer is designed with your privacy in mind and uses a camera indicator light that glows green when the camera is active. So you will always know when the camera is on.
Erm, the whole point is that you can't trust this kind of indicator on an OS that's completely closed source.
My understanding is that the LED is hard-wired the power source of the camera sensor. There's no separate software command to turn the LED on. All Macs run Windows and most run Linux pretty well. So you /could/ audit at least one open source software implementation.
However, like many others have mentioned in this thread, personally I see the value in having a physical cover in addition.
Erm, the whole point is that you can't trust this kind of indicator on an OS that's completely closed source.