Read an interesting article this morning, courtesy of Digg, about how Isreal handles airport security. Considering that they've been dealing with terrorists for a lot longer than any other country in the world, I think having a look at their security measures is a good idea. Check out this article from the Star. Despite facing dozens of potential threats each day, the security set-up at Israel's largest hub, Tel Aviv's Ben Gurion Airport, has not been breached since 2002, when a passenger mistakenly carried a handgun onto a flight. How do they manage that?
Behavioural profiling. Ignoring the politification (is that a word?) of the word profiling, it is a reality that people, regardless of race, gender, religious beliefs or age, who are planning to do something that people will want them to not do and flies in the face of their own instincts, will exhibit certain behaviours unconsciously, and these behaviours can be observed by someone who has been properly trained. Many layers of well-trained eyes protect travelers without invading their privacy.
This is a concept that has been around for a long time. Indeed, some researchers believe that intuition is an unconscious form of behavioural profiling.