My understanding is that this is the technique that has been in use
in Israel (at the airports) for quite some time. It is a system
that actually is somewhat effective. Unlike say dumping all your
liquids in a trash can or spreading athletes to the american flying
public. I have to say this is one of the two things that the TSA
has done that I think will have some positive security effect. The
other is screening luggage for explosives.
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