Legality is one question. Another question is the view of the keepers of the record books. If one is interested in trophy hunting, this may include getting their buck registered "in the book." It seems I have heard that one or another of the Boone and Crocket or the Pope and Young biggame records recordinginstitutions take a dim view of using such telecommunications devices to improve one's hunting. I may be entirely wrong, but if I were a trophy hunter looking for "a record book" buck, I would sure check into it before using the electronics gizmos.