New window film blocks cell phones and EMP attacks

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New window film blocks cell phones and EMP attacks

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

When a Boeing 757 struck the Pentagon on September 11, 2001, a blastproof film on its windows prevented them from shattering into a swarm of flying shards. Now, a version of that same film promises to block not only projectiles but also the collective electromagnetic chatter generated by our increasingly wireless society.

Once manufactured under an exclusive contract with the U.S. government, this recently declassified window film is now available to the public. But don't expect to see it on store shelves anytime soon. Currently, it's only available directly from the manufacturer, and at prices that will likely make it prohibitive for all but the wealthiest home owners.

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 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.

... Quote:
We are limited by confidentiality agreements to say exactly which buildings [the window film] is on. But immediately after 9/11 one of the senior military officials talked about a window film that seriously protected against the damage from the plane crash. You can put two and two together and assume it was also protecting against wireless signals.
says Kent Davies, president of CPFilms, Inc., in Martinsville, Va., which manufacturers the protective covering dubbed LLumar Signal Defense Security Film.
But Is It for You?

Unlike the built-in security measures present in nearly all wireless routers, Signal Defense Film doesn't come cheap. CPFilms declined to give details of their pricing structure, in part because their technology is only sold as part of an all-inclusive package (of which the film is one component).

Much more on the site
By netchicken: posted on 6-7-2007

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