This kind of thinking is as legitimate as believing lie detectors work, i.e., not at all.
Israel is using those methods in their airport security, quite successfully given their threat level. The problem is that it does not scale well and requires very well trained and attentive personnel.
alt Hacker News
Israel is using those methods in their airport security, quite successfully given their threat level. The problem is that it does not scale well and requires very well trained and attentive personnel.