Shielding
Special underwear protects wearers from infrared photographers. And a window film that blocks electromagnetic waves but lets in light.
Somehow, I don’t see either becoming a mass-market consumer item, although I can certainly imagine military facilities installing the latter.
Josh • June 7, 2007 3:04 PM
Not to pick nits, but light “waves” are electromagnetic “waves”. It might be better to say that the film blocks certain ranges of electromagnetic radiation.
Yet, I think “hackers” can use visible light electromagnetic waves to do all kinds of “hacking” too…