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Lie Detectors to be Used for Airline Security
swimgeek writes "A new walk-through airport lie detector being made in Israel may prove to be the toughest challenge yet for potential hijackers or drugs smugglers. The product has been tested in Russia and should be commercialized soon. The software in the detector picks up uncontrollable tremors in the voice that give away liars or those with something to hide, say its designers. Passengers that fail the test are then required to undergo further questioning or even search."
No, you still can't detect lies with an MRI. You can observe brain activity which may or may not correlate to deception, which will differ greatly for each individual you examine.
To actually detect lies, you have to know everything the person making a statement knows, and then you still don't know if he's lying or just misinformed.
-jcr
The only title of honor that a tyrant can grant is "Enemy of the State."
"Those who would give up
a little freedom for a little safety,
deserve neither freedom nor safety."
--Benjamin Franklin
It will be found an unjust and unwise jealousy
to deprive a man of his natural liberty upon
the supposition he may abuse it.
--George Washington
A bad analogy is like a leaky screwdriver.
OTOH, one has to critically analyze those techniques. "Lie detectors", ALL "lie detectors", simply DO NOT WORK. They are a scam based on intimidation. I actually read the article and this is more of the same crap. Here are the key quotes: ... passengers don headphones at a console and answer "yes" or "no" into a microphone to questions about whether they are planning something illicit ... "Some may feel nervous because they have used drugs, while having no intention to smuggle drugs," [Amir Lieberman, CEO of the company making this thing] said. ...
So it seems that one of the questions you're asked is whether or not you've used "drugs". Makes you wonder what other personal questions it asks? The answer: Lots. The way lie detectors "work" is that the interviewer asks a long series of questions, many of which are personal, and many people are VERY likely to lie about (Have you ever stolen from an employer? for example). The interviewer is now confident that you've lied about SOMETHING in his presence, so he then proceeds to intimidate the subject by CLAIMING that he can tell whether or not he's lying. The idea is to trick the subject into making admissions.
So how does that apply here? The users of the system "know" that EVERYONE who uses the system is "lying" so they have a built in excuse to pull people aside that are "suspicious". Like Arabic people for example. In the context of American airport security it simply provides an excuse to profile people.
Precisely. Your description of the screening process is also dead-on accurate.
However, what works for Israel doesn't necessarily work for the USA. You're right in stating that the goal is to put some stress on the individual to evaluate the strength of their story. The security screeners aren't Einsteins in every field, however anybody (especially trained anybodys) can spot deceptive behavior when they see it. So, like you note, the screeners aren't so interested with the details so much as they are interested in the overall story and making sure it doesn't crumble under scrutiny.
Why is this the tactic that is used? Suicide attacks need somebody willing to commit suicide. Although I am sure there are individuals in this world who can be ice-cold when walking to their own deaths, the overwhelming majority require a little assistance by way of religious fervor to convince themselves that they're simply going to go somewhere "better" when they explode. Israel has a long and sad library of suicide bombers for other means of transportation, and of the few that are caught every once in a while, there is enough data to form a profile. I'll focus on Muslim extremists here, since they account for the overwhelming majority of terrorists: the ones planning the attacks are most often *not* the ones carrying out the attacks. To understand why the security model is built the way it is, it is useful to understand the terrorist food chain and who it is that goes out to perform the attacks:
For all of their talk, the planners are not the ones doing the deeds they profess to believe in. They stay home and send brainwashed teens to do the dirty work. What are the lures?