I had the misfortune of having my 16GB Wi-Fi iPad stolen this afternoon. Does the iPad have a serial number or other digital fingerprint that might make it possible to track or trace the location of this property? Is there a way to brick this unit so as to secure private information and data? Of less consequence, is there any way to redownload or receive a refund for purchased apps or content which has not been backed up to my laptop (about $20 worth). How useful is this iPad going to be to the beneficiary of the theft?