Apple patent application reveals a camera with built-in privacy filter@ 2013/03/01
Based on that illustration up there, we're going to hazard a guess it could be used in Apple's MacBook and iMac lines, though the patent application doesn't explicitly exclude mobile devices, either. (In fact, the filing acknowledges a camera like this could be used in, ahem, a television.) What we'd really like to know is how easy it would be for the user to active the privacy mode. Alas, though, the USPTO doc doesn't give any definitive answers -- the filing suggests the user could choose to switch modes, or that launching certain applications (i.e., those that use the camera) might trigger a change in privacy settings. In any case, that's about all we can glean from the patent application, but feel free to peek for yourselves if you feel like letting your imaginations get ahead of you.