I remember seeing a photo of an iPhone developer in front of a huge banner with a screenshot of his app inside of an Apple building on their campus, and it was labeled something like "Secret photo of me in front of banner with our app!" or something of that nature, so it's a possibility that they have restrictions on cameras.
They have a restriction on taking pictures of things you shouldn't (which includes most of the campus), but they don't have restrictions on cameras.
In addition to there being no written rule against it, I've openly and regularly hauled digital video and still cameras across campus without ever hearing any complaint from the omnipresent security guards.
How do you think people work on iPhoto/iMovie/FCP? Check out cameras from a locked facility?
