Well, its a thought. But, wouldn't frequent flyers build up their lifetime rad limit quickly with this technology?
No, it is not the kind that goes through you. It just bounces off.
Very effective, but some people take it personally.
It is like the case of the patients in Washington DC taking the heart monitor stress tests where the doctors inject Trace amounts of thorium to watch the blood flow?
Then the radiation sensors in the highway tunnels pick up the residual radiation and the highway patrol pulls them over... Weird but true.