With your ideas you are going to get into very serious trouble with planespotters and aircraft photographers. You don't want to upset them; they're a lot more dangerous then the terrorists!
But seriously now, just how many civil airliners have been downed by surface to air missiles?
It's a nice idea on the surface but there would be so many other ways of establishing who's who without too much difficulty. So many people are involved with the preparation of a flight that it wouldn't be difficult to recruit someone "on the inside" to pass on the true identity of "Yellow 1234".