Why do we have a 'no fly' list?
Why not have a 'FLY LIST'... if I were a flier, especially a frequent one (I'm neither).... I would not mind at all applying for 'fly list' status by having a thorough background check (for a fee, of course), obtaining a 'FLIER ID' with my eye scan encrypted in it. Then..... I would be able to arrive at the airport, insert my ID card, lean in to a machine that would scan my eye for a match and then shoot out a pass for me and my bags..... and be on my way.
Renewable periodically.... for a reasonable fee, of course. Success of such a plan would be dependent upon how badly passengers want to by-pass the hassle of the 'line up to be felt up' process.