Airlines aim to take hassle out of security checks

The International Air Transport Association unveiled a mock-up Tuesday in Singapore of what it dubbed the "Checkpoint of the Future," where passengers separated by security risk would walk through one of three high-tech, 20-foot-long (6.1-meters-long) tunnels that can quickly scan shoes and carry-on luggage and check for liquids and explosives.

"Passengers should be able to get from curb to boarding gate with dignity," IATA Director General Giovanni Bisignani said. "That means without stopping, stripping or unpacking, and certainly not groping."