Good idea
Great app as iphone theft is probably already a big issue already. A little off if the iPhone is indoor but this is a limitation of the phone itself. Hiding the icon would be a great idea if possible, so the thief wont be able to change the URL. Also having the possibility to send offline messages to the phone as SMS to warn the thief, as well to have the possibility to override and change the password lock for the phone would be an awesome feature.
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