If that technology actually works (that is, if it detects materials the way they believe it does), that's... actually pretty slick. There are definitely some p

If that technology actually works (that is, if it detects materials the way they believe it does), that's... actually pretty slick. There are definitely some privacy concerns, but it's a large step forward both in terms of privacy and (technical) efficacy. That, of course, doesn't mean that it's actually a Good Thing (TM) that we use these, regardless; just because it works technically doesn't mean it's actually an effective way of preventing terrorist attacks, or that any of that is worth the privacy hit, even if it is smaller than with previous tech.