Like a fella mentioned before, the difference between the tits I saw at Mardi Gras this weekend and this, is that all those women (and some men) were doing it out of free will and weren't being being put in the situation of "do this or you lose your ticket, or you drive." I admit the latter hasn't happened yet as it's still voluntary, but, like the shoes, it will. They'll get this 'test' installed in a few more major airports over the next year or two, then we'll have some 'scare' at one of the airports that doesn't use them... then everyone (with the exception of FT) will say: "If only we had that x-ray machine there, we could have caught them." viola! These machines get mandatory status in all airports for all people flying within and to the US.
I have zero faith in any of the front end systems the TSA has implemented. Getting back from Mardi Gras yesterday, flying from LAX to SFO the TSA took my toothpaste. I understood as it was a 4 oz container and against the rules, but the problem is that that particular container went 150k miles in the last nine months, in and out of the US dozens of times, across the country a dozen times and back and fourth from SFO to LAX and BUR. Not once was I questioned about it in those dozens of flights...
I think yesterday is when I 'truly' lost faith in any of their systems... and all over some Colgate.