Most new consumer Macs come with a built-in iSight camera which can be used for all sorts of fun from video chatting in iChat, horsing around in Photo Booth, to third party apps like Gawker. Despite these fun and harmless uses, there are some security concerns with having a built-in camera particularly in academic and institutional settings, and because of this some System Administrators have taped covers over the iSight and even removed them from the machines entirely. Thankfully, there's a much easier way to disable the built-in iSight camera, all you have to do is move a file.