Ritual Humiliation Scanners, Ctd

Drum shrugs:

I think the privacy concerns are close to insane. But I do care about whether we're spending billions of dollars on technology that doesn't do us any good. Looking at the pictures the scanners produce, it sure seems as if they're more effective than standard screening. So can someone please explain why they aren't?

In practice, I haven't given a toss when I've gone through those things. But like Kevin, I would like to know if they can actually catch someone with some explosives in his taint.