If this worked they would have caught the Gilgo Beach Killer a decade before they actually did. He contacted his victims with burner phones that cops were never

If this worked they would have caught the Gilgo Beach Killer a decade before they actually did. He contacted his victims with burner phones that cops were never able to trace back to an individual. They were able to figure out which towers they pinged, which they later used to identify the person by matching it against which towers his personal cell phone pinged (and they could only do that because they had a witness identify his truck). And that's when police actually care about catching the person.