Modesty apparently has no place in the digital age. It's one thing for airport security to consider using technology that can, but some tech-savvy voyeurs are cobbling together DIY infra-red scanners for less-than-noble uses. For every offense, however, there is economic opportunity.
The "Shot Guard" line of undergarments, for instance, is designed to "make photography difficult," according to American Inventor Spot. The defensive clothing is being marketed in Japan, where the peeping problem is apparently concentrated. (Why are we not surprised?)
It's unclear how this foundation-wear blocks prying beams, but Shiny Shiny suggests that it could involve "chilling your nether regions." This invites a whole slew of bad jokes, of course, so we'll just stop here.