WSJ.com - Which Travelers Have 'Hostile Intent'? Biometric Device May Have the Answer The answer to all of airports' problems, these booths use biometric responses to questions to judge potential high fliers true plan. Ever think you would have to take a lie detector test before getting on a plane? Someday, this may be common... Of course, they should just implement my method of terrorist detection and prevention: install a Jack Bauer in each one of these booths. He is good at getting people to admit that they are terrorists... whether they are or not.