“Anyone with sufficient equipment to pick up on it really. Humans ideally. I mean let’s be honest in all objective realities you will never see another human again for the rest of eternity. But on the other end of things, if it happened once, it could happen again. And if by some immeasurably impossible chance it does, and I’m not here to play ball. That little doo-dad will get their attention. It will tell them you’re friendly… and not to kill you.” 