The company just applied for a patent on a camera whose images could selectively transition from opaque to transparent and back again, depending on how much privacy is called for.

ENGADGET: Apple patent application reveals a camera with built-in privacy filter

Besides, even though the walls of his office are of the traditional opaque variety, he confessed that he has a camera trained on his desk so that his co-workers, now almost 100 of them sprawled across an expanding series of offices around the building, as well as in Boston and Santa Monica, can see what he's up to at all times.

WSJ: Inside the App Culture