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" This week has been one of downs and ups for the likes of X-ray vision. The TSA said it&amp;#039;ll remove their controversial body scanners by June, since their manufacturer couldn&amp;#039;t stop them from from showing too much. But then the NYPD started testing a portable device that could see concealed handguns. Though the NYPD models are hulking and require trucks to transport, they are mobile. And that is as good an excuse as any to dive into one&amp;#039;s adolescence and wonder yet another time: How close is the world to portable, covert, X-ray cameras? Online searching mostly amounts to a dark abyss of misleading, broken, or far-off promises. But it also leads to the story of Dr. Kenneth O, an electrical engineering professor at UT Dallas, who announced last April that he and his team had designed (but needed to keep developing) a chip that could attach to a smartphone and enable it to depict the happenings on the other side of walls, plastics, and clothes. It works by using a range of electromagnetic waves \u2014 called terahertz \u2014 to, as Popular Science describes, &amp;quot;penetrate where optical light can&amp;#039;t.&amp;quot; In other words, it uses real, impressive science. There are practical uses for the device: finding studs in walls, checking for document forgeries, and detecting skin cancer early on. But as Dr. O put it in a conversation with the Dallas Morning News, the technology he&amp;#039;s developing will only really work if you use it from 4 inches away \u2014 which, yes, will blow your cover. &amp;quot;This could be the dream of every high school boy,&amp;quot; Dr. O said to the paper. &amp;quot;But the approach we&amp;#039;re using will not allow it.&amp;quot; Damn. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.esquire.com/lifestyle/cars/a18405/portable-x-ray-cameras-15020299/>