Yellow Jacket is producing an iPhone case that doubles as a stun gun. Seth Froom invented it after being robbed at gunpoint in his home in 2011. The $139 stunner has 650k volts. Yellow Jacket CEO Sean Simone says, "This isn't going to throw a grown man across the room or severely injure someone. Its main purpose was to "cause pain and create a diversion". The Yellow Jacket is against the law in New York, New Jersey, Illinois, Massachusetts, Michigan, Rhode Island, Wisconsin or Washington, D.C.
If only you could use the stun feature as a text alert! That could get interesting.