The Bluetooth technology is an excellent technology that has been made because it has many uses you might now even think of. For example, the BlueWatchDog is a personal anti-theft device and this device is Bluetooth enabled. This device will alert you on your cell phone when someone is trying to steal your stuff like you wallet and it goes beyond your specific radius. The alarm will sound in an ear piercing shriek that hopefully will make the thief scared and drop the item he has taken but just cross your fingers it is your wallet and not an expensive device. It will cost you GBP 43.47 (US$ 70).