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It’s a brilliant idea: You’ve got an iPhone which can now navigate based on mobile phone towers (with great success, we might add), so why shouldn’t you be able to get it to tell you where it’s hanging out?

Enter iPhone Lojack, an application that, when launched, sends the whereabouts of your iPhone to a Twitter feed, so if you leave it in a cab or if someone half-inches it, you can skip over to any computer with an internet connection (or, y’know, borrow your mate’s iPhone) to track it down and apprehend the thief.

It’s a rather involved hack which requires you to have an jailbroken (i.e hacked) iPhone, but if the thought of invalidating your iPhone’s warranty fills you with trepidation, we imagine similar functionality would be possible when Apple launch their Software Development Kit for the iPhone, due some time soon.