...How the right parameters would be set and configured for "theft movements" is a little vague. In your scenario, I think it would sound an alarm that could be disarmed by the authorized user (say entering a key sequence or password) that would tell it, hey no, it's just me! Here is the link to the patent explanation with some rough graphics: http://appleinsider.com/articles/12/11/01/apple-continues-work-on-anti-theft-systems-for-idevices