Hmm, this one doesn't really bother me as much as lots of other things. Given the high stakes, we DO need some kind of real assurance that ceramic weapons aren't being smuggled aboard, otherwise you can book it they will be! As invasive as such a scanner seems, at least it's better than physical strip searches. 'Course nudity has never bothered me anyway, so I suppose it wouldn't seem as bad to me as to someone who's really modest in that way.
What you said is more concern, Aries -- what happens to those "pictures." I would argue strongly for EXTREME penalties for anyone copying, selling or distributing images obtained in this way ... extreme enough that no one will do it. The day that airport scans of Pamela Anderson start being available on porn sites will be hugely demoralizing to every traveler, and I think the laws ought to be stiff enough to make SURE it doesn't happen. To say nothing of kiddie-porn ... the mind shudders.
Love,
Greg