Who you gonna call? The BlueSniper

Also shown off at Defcon this past week, you can add the BlueSniper to add to your arsenal alongside your Sniper Yagi rifle. Like that other wireless firearm, the BlueSniper consists of a rifle stock with a scope and a yagi antenna attached to it. The team behind this one claims the BlueSniper can be used pick out and attack Bluetooth-enabled devices from up to a kilometer away, and is powerful enough to detect them even through building walls, but not quite powerful enough for busting ghosts.