Can this do what Majic Eyes said? Long distance?
No, at longer distances there are things like air movement to consider. Certainly it could be tracked and accounted for by a computer, but not something hand held. The stuff Majic Eyes talks about would have to have a receiver somehow inside or on the victim in my opinion. It is certainly real electronically speaking. I’d imagine it’s not too terribly different than the receivers carried in a person’s ear. You could easily plant a receiver beneath the skin of a person sans their knowledge. If that receiver is near/on/in the right bone, it could sound like it’s coming from inside the head.