The only thing that is going to work is a Certified Passenger Program. You submit to a full background check, have an interview with DHS, and get a smartcard that you use to gain access through security gates, using an electronic scan of your thumbprint. The card has to be renewed every four years, like a driver's license. People who are not DHS Certified Passengers do not fly. Period.
This system isn't foolproof - someone can convert to Islam after getting Certified, for example - but it will be much more effective than other current suggestions.
The only thing that is going to work is a Certified Passenger Program. You submit to a full background check, have an interview with DHS, and get a smartcard that you use to gain access through security gates, using an electronic scan of your thumbprint.The immediate reaction, primarily by the sandmaggots, would be "violation of rights!"
Never mind that it can be entirely voluntary. Don't want the exposure? Find some other way to travel and don't saddle the rest of us with that trillion$ expense!