Now let me get this straight, the systems would have only stopped 2 of the 19 terrorists, maybe, if they worked perfectly and the CIA had good accurate pictures of them. The system only works about 90% of the time, meaning hundreds of people everyday are going to be misidentified as terrorists, and again, only terrorists that we actually have pictures of and can identify as terrorists will be caught by this. Of course that means Bin Laden will simply use people who haven’t been identified already, right? So this would, in effect, do almost nothing to stop terrorism, but severely inconvenience travelers on a daily basis. And yet people are falling all over themselves to install these things? Why?
I don’t mind slight inconvenience when there’s a purpose, but this is useless.