First came the news of a future iPhone or perhaps even Apple's mysterious tablet design and now a second very cool patent has surfaced from the US Patent and Trademark Office that tells us that Apple may have presence detection coming to hardware in the not too distant future. The new technology will remotely detect a person's presence without requiring physical input by the user. The technology could be built right into the physical frame of various Mac hardware or set within iSight itself. Apple may employ SONAR as one of the methods of achieving this feat. Apple also makes a side note that that this technology could apply to a future a television – and even gives us a peek at a MacBook with a numeric pad. It sounds like a very cool feature – though beware, it might just freak your cat out.