RIM's working on a wireless anti-theft device designed to keep track of your BlackBerry when you forget to. This device constantly monitors whether your BlackBerry is in range, and when you get pick-pocketed, the device tells your BlackBerry to switch to theft mode. If a certain key isn't entered in a certain amount of time, the BlackBerry becomes non-functional.
This is also useful for forgetful drunks who leave their BlackBerry devices at the bar after stumbling outside to puke and/or urinate. RIM officials couldn't comment on when this product was due for release.