Like a tinfoil hat for your house, new technology promises to block hackers' access to your wireless transmissions - and protect against EMP attacks and explosions, to boot.The coating, which in its thinnest incarnation is only two one thousandths of an inch thick, can block Wi-Fi signals, cell phone transmissions, even the near-infrared, yet is almost transparent, making it no more intrusive than conventional window treatments. It can keep signals in (preventing attempts to spy on electronic communications) or out, minimizing radio interference and even the fabled electronics-destroying electromagnetic pulse (EMP) generated by a nuclear blast.
The film has already been plastered across the windows of more than 200 US government buildings, including structures operated by the departments of Defense and the Treasury, as well as in the homes of high-level members of the current administration. Currently the film is not widely available and is very expensive.
For the full article, click on:
http://sciam.com/article.cfm?chanID=sa001&articleID=6670BF9B-E7F2-99DF-3EAC1C6DC382972F
