[ It looked like it hurt, so if it felt that way too, Minato's not going to try it first hand anytime soon. He takes the phone back with a nod, holding it in his hands rather than putting it back in his pocket, idly looking over at the inner surface of the dome as if considering something. ]

I don't think it's sentient, to be able to do things like defending itself or choosing whether to kill somebody. Isn't something like an electric fence more plausible? Only triggered by a certain amount of force over a set threshold, or something.