Signal-blocking wallpaper stops Wi-Fi stealing (and comes in a snowflake pattern!)
July 18th, 2012
11:35 AM ET

Signal-blocking wallpaper stops Wi-Fi stealing (and comes in a snowflake pattern!)

By Olivia Smith, Special to CNN

New York (CNN) - Imagine wallpaper that does work for you and for your electronics. Wallpaper that doesn’t only protect your walls, but also protects your health, equipment and data.

Researchers at France’s Institut Polytechnique de Grenoble have worked with the Centre Technique du Papier to develop Wi-Fi-blocking wallpaper. The product, also known as metapaper, claims to selectively filter, reduce or reflect electromagnetic waves.

Metapaper not only protects against intruders stealing Wi-Fi from buildings, but also ensures that signals inside a building are more secure and stronger, the group says. Benefits include data security for companies or people that need dependable Wi-Fi. The wallpaper can also be used to create quieter spaces for places like hospitals and movie theaters.

The high-tech paper does, however, allow FM radio waves and emergency frequencies to pass through. The paper, which has a snowflake pattern on it but can be covered up by traditional wallpaper, is made from renewable resources and is recyclable, according to the Centre Technique du Papier.

Conductive silver ink and metallic patterns on the wallpaper filter around 99% of waves coming from outside, according to the French newspaper Le Monde, which published a story on the topic earlier this year. However, a room cannot be completely safeguarded by the paper - unless you use it to seal off floor, ceilings and windows, of course.

The metapaper also advertises itself as a healthy alternative, since it claims to reduce a person's exposure to electromagnetic waves. Scientists behind the product point to studies that say the overuse of wireless technology could cause harmful heath effects.

The Finnish firm Ahlstrom acquired the rights to the metapaper. Exact cost estimates have not been released. According to the Centre Technique du Papier, the paper is not yet commercially available because it is still in the industrialization phase.

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Filed under: Culture • Design • Environment • Innovation • Internet • Tech
soundoff (446 Responses)
  1. underdog_dave

    I have a customer who owns a hair salon next door to an insurance business. the insurance business have installed something that's blocking radio signals. the hair salon can't receive any radio stations except the most powerful ones and even they are weak. I have checked all the equipment and its operating perfect. I have even installed an exterior antenna and its still blocked... any ideas?

    July 13, 2014 at 5:20 pm | Reply
    • Phasma Felis

      You might try pointing out to the owner that civilian use of radio jammers is incredibly illegal and subject to tens of hundreds of thousands of dollars in fines.

      If that doesn't work, file a complaint with the FCC, and maybe talk to your local police as well.

      Don't go burning bridges unless you're sure it's them, though. Jammers can have a large coverage area; it might be a different local business. The FCC will have equipment that can track the source, so if you're uncertain, you might just go straight to that.

      October 7, 2014 at 4:13 pm | Reply
  2. Johne868

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    April 28, 2014 at 8:51 am | Reply
  3. taxelite

    Is this for real, oh my :)

    March 7, 2014 at 7:11 am | Reply
  4. mykroft

    Put this in the schools, so the students can't text each other. BTW, someone put out a paint with metal particles in it to block RF a few years ago. Easier to put up on the walls than wallpaper.

    September 6, 2013 at 1:21 pm | Reply
  5. Carl

    I like it but wouldn't a person need to wallpaper the ceiling as well or even the floor if you live in a condo or apartment?

    August 1, 2013 at 11:55 am | Reply
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    June 20, 2013 at 11:12 am | Reply
  7. Mick

    Would prefer to open all WIFI s to make all cities Hotspots – just a small security and trust question

    May 27, 2013 at 8:00 pm | Reply
  8. eric

    I think this is really bogus, especially the health claims. I mean, light is electro-magnetic radiation. What it doesn't say is whether or not it will restrict cell phone calls or radio reception. This is really just a commercial for more expensive wallpaper.

    May 23, 2013 at 11:42 pm | Reply
    • eric

      Okay so It did say FM radio, but still I think it's a marketing scam. Will it interfere with my magnetic bracelets which boosts my manpower?

      May 23, 2013 at 11:45 pm | Reply
    • baadc0de

      Yes, light is electromagnetic waves. Like the ultraviolet light that causes sunburn and skin cancer

      May 24, 2013 at 3:32 pm | Reply
    • Michael

      Since cell phones use frequencies close to wireless, you raise a good point. What's the use of having a way of blocking wireless if you have to step outside to use your phone? Then, there's the flip side of never being annoyed by someone on the phone in an elevator or, worse, the bathroom. Decisions, decisions ...

      June 7, 2013 at 11:13 am | Reply
  9. Nick

    "Scientists behind the product point to studies that say the overuse of wireless technology could cause harmful heath effects."

    Unless they are referring to carpel tunnel syndrome from typing on wireless keyboards or thumb aches from texting – whoever these scientists are, they certainly do not represent the current consensus among the scientific community as far as I am aware.

    May 11, 2013 at 12:14 am | Reply
  10. gregorymunson

    Some Facts:
    1) Securing your WiFi with a Password can be hacked with tools known throughout the internet and easily obtained.
    2) The Metapaper does increase signal since it will travel across it surface this creating a signal extension.
    3) Glass is the hardest house/building substance to travel thru. Yes Glass is harder to penetrate then a Brick Wall.
    4) Magnetic Wireless Signals DO NOT BOUNCE they either pass thru or they don't.

    May 10, 2013 at 5:56 pm | Reply
    • Michael

      Would that not depend on the strength of your password? What I use is something I can easily remember but would be meaningless to most – aircraft block numbers ... such as that of the Memphis Belle – B-17F-10-BO ... with special characters and mixed case. I ran a cracking program against P47d!5Re! (George Preddy's Thunderbolt "Cripes A' Mighty") for two weeks without a hit. Now, using your DOB or mother's maiden name ... Duh ...

      June 7, 2013 at 11:19 am | Reply
    • B.Jaws

      One thing that is fairly airtight is a pre-defined access control list utilizing mac addresses, and a good router password. Its near impossible to spoof a mac address....takes alot more than wireshark or some entry level packet sniffer...NOt hard to set up either, and you can use paint or whatever you like on your walls.

      July 16, 2013 at 4:26 pm | Reply
  11. Robert

    Rather than buy this expensive wall paper and spend the time putting it up, I think I will just continue to password protect my wifi.

    May 10, 2013 at 9:34 am | Reply
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    April 24, 2013 at 3:59 pm | Reply
  13. Jinxy

    This is for people that don't know how to secure their wifi. This is just simply retarded.

    February 21, 2013 at 6:30 pm | Reply
  14. jj

    Wasn't Sheldon's password, "Penny_get_your_own_wireless"

    February 21, 2013 at 3:18 pm | Reply
  15. jj

    What if the house has more than 1 wireless system. I have my wireless router, a security system and an atomic clock

    February 21, 2013 at 3:16 pm | Reply
  16. Sweetseatsr

    This is really not a good thing from a health perspective. Not only does it block/reflect waves from the outside it does so on the inside, making it it quite a "cooker." And anything entering from floors and ceilings would just bounce around. Good if you have a room in a single floor home and no cell phone or wifi router inside and want to mildly block neighbors, smart meters or cell towers (a little) but otherwise you need to use other strategies for health protection. Like moving and removing the sources.

    February 20, 2013 at 11:39 am | Reply
    • geo

      not correct. Signals do not "bounce around." The wall coverings are grounded.

      April 4, 2013 at 10:12 am | Reply
  17. @ christies.ireland

    About 10 years ago cnn anounced ground brakeing micro heart surgery eventhough I was talking tothe doctor who preformed it I have forgotten the detailes , ???did it ever go into use? ???????????

    February 12, 2013 at 9:12 pm | Reply
  18. @ christies.ireland

    About 10years ago cnn anounced ground brakeing news of micro heart surgerie ( bypass ) I was talking to the on the phone ( in USA ) I have forgotten the details , Do you know if it ever went into general use ????????

    February 12, 2013 at 9:04 pm | Reply
  19. go kart

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    February 10, 2013 at 10:12 pm | Reply
  20. Michael

    Yes, but is it compatible with Windows? *Slaps random wall*

    January 23, 2013 at 3:49 am | Reply
    • jeff

      No, but its "scalable"....

      February 2, 2013 at 3:02 am | Reply

    this is straight up Mel Gibson's character in the movie Conspiracy Theory alley.

    John McAfee will so buy.

    People like us that are not paranoid or super hackers and want WiFi to work all through our house will so not buy.

    December 9, 2012 at 10:28 pm | Reply
    • iceman

      Think of it more like Protecting your health from all the exterior radio wave signals, that come at you through your walls when you are sleeping for 8 hours every day in the house, like maybe your neighbors routers on both sides of your house. Radio waves can give you headaches and if the signal is strong enough, the headaches can turn into cancer over many years of exposure, about 10-20 years. you've got wi-fi transmitting back and forth, fm signals in the air waves all day long, am signals, vhf from boats around you, Hi powered Police Radios, many radio Waves all day long Bombarding us and Causing Cancer From Over Exposure of 10-20 Years, anything to insulate you from these waves is a Good thing! I can See Cars in the Future With Radio Wave Protection Built into the Skin of the Car.

      January 27, 2013 at 7:00 am | Reply
      • headache

        is that why i have a headache on one side of my head when i lay down every night for sleep?!!

        May 10, 2013 at 11:31 am |
    • iceman

      Re: Mel Gibson Movie- And He Turned Out to be Right !!!

      January 27, 2013 at 7:02 am | Reply
  22. TechCheck

    File this one is the "Solving a problem that doesn't exist" folder. User passwords, people.

    December 2, 2012 at 1:09 am | Reply
    • Kevin

      This solves a *big* problem for me. Not securing my WiFi, but blocking the dozens of other networks that interfere with my WiFi.

      January 4, 2013 at 8:06 pm | Reply
  23. M*

    Well Helios Group develop kind of Emulsion paint that significally lowers mobile and other radiatons : (see video)

    November 29, 2012 at 8:32 am | Reply
  24. Bravo.I

    Superb invention. Now they should really work on making some sorta wallpaper to strengthen and widen a signal, which I'd probably buy asap! : ) Signals are extremely low in my room and not anywhere else.

    November 29, 2012 at 12:21 am | Reply
  25. Rex Rowland

    What always stops me is a password.

    November 17, 2012 at 1:09 pm | Reply
  26. Chris

    Sure, but it's 2012. Who still uses wallpaper?

    November 13, 2012 at 4:23 pm | Reply
    • Sal

      You still use walls? Ugh, SO 2011...

      November 14, 2012 at 1:40 am | Reply
  27. dude

    Won't this prevent the signal from getting to other rooms in the house/apartment?

    November 13, 2012 at 4:12 pm | Reply
    • Austin

      YES and it also degrades cellular reception. The only practical usage would be in a studio style apartment (which is more common in Europe and Asia) or companies/government wanting to throw this in the anti-hacking pile of passive blocking.

      November 15, 2012 at 5:32 pm | Reply
      • Dave

        Cell phones operate in a different frequency range and would not be affected. Cordless phones would be. Still, it is so much easier just to 1) choose a unique SSID (network ID), 2) set up WPA2 security with a strong passphrase, 3) reduce the number of IP addresses your network will assign, 4) set the Access Control List to only allow the MAC IDs of your devices. Those simple steps will stop 99.99% of the problem.

        November 16, 2012 at 11:02 am |
  28. staci

    hummm, what about the windows? So the signal cant get through the wall and it can still zip out the window... I agree get a password its not hard and I am sure far cheaper

    November 10, 2012 at 5:40 pm | Reply
    • Bravo.I

      Maybe they'll design some curtains or transparent sticker paper for it : ). But yeah, the signals could probably find their way out through the windows...

      November 29, 2012 at 12:31 am | Reply
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  37. Josh

    Instead of installing wallpaper I use a password.

    August 18, 2012 at 10:50 am | Reply
  38. Johnnyrogers

    Can use that to replace my tin foil hat.??

    August 12, 2012 at 3:58 pm | Reply
    • bresson

      Yes your new foil apartment will replace your foil hat... but only while you're inside it...

      August 17, 2012 at 10:45 pm | Reply
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      October 22, 2012 at 4:13 am | Reply
  39. anneominous4

    I suspect that (by now many decades old), traditional foil-backed wallpaper would do an even better job, as long as each panel were connected by a conductive ribbon or wire... perhaps behind the baseboard. And it would almost certainly be a lot cheaper.

    But of course you'd have to put your TV and WiFi antennas outside.

    August 10, 2012 at 9:37 pm | Reply
    • Eukannt Avmai Adey

      It's not that simple. Metal (foil like you're talking about) could simply absorb and re-radiate the energy, without forming an effective barrier. Bear in mind antennae are generally made of metal or other electrically conductive material. Obviously radio waves can go through metal.

      If you doubt this, simply take your cell phone, surround it in an envelope of aluminum or tin foil (whatever you have handy,) and call it from another number. If you hear it ring, despite being completely wrapped in foil, I'm right, and foil is not an effective shield.

      Faraday cages work (as they were explained to me) by absorbing a little of the radio energy that hits them, and by having a physical structure such that before the energy is re-radiated, it interferes with itself, sets up a standing wave inside the conductor that resists the flow of the signal. Basically, it has a high VSWR (pronounced viss-war, rhymes with miss-bar) which IIRC stands for Voltage to Standing Wave Ratio. You set up a standing wave inside the conductor and it cancels the incoming energy. Or something like that. Just plain sheets of foil shouldn't work, there needs to be some kind of structure, a place for the energy to go where it will interfere. Think of a good, functional Faraday cage as being a bit like an electromagnetic shock absorber.

      Put it this way, an antenna needs generally to be some binary integer fraction of the wavelength of the energy it's going to be used for to be effective. (Full wave, half wave, quarter wave, etc.) If it isn't, if it's not going to be as effective, because a coherent wave can't develop. This doesn't mean none of the energy penetrates, it just means that the first photons interact with the conductor, set up an internal field that because of the physical geometry and/or electrically conductive characteristics of the material, resist further energy absorption. The idea of making a Faraday cage (or screen room, or RFID resistant wallet, successfully, depends upon constructing a very ineffective antenna, and putting what you want to protect inside it.

      It's the reason a microwave oven can have holes in the shield on the door. Visible light is really different from microwave energy only in its wavelength, or you could say its frequency, although those are two sides of the same coin; no pun intended, but they're inversely proportional. A one Hertz (1 Hz, or one cycle per second) electromagnetic signal would have a wavelength of about 300,000 kilometers, or 186,000 miles. By contrast, a 300 megahertz signal has a wavelength of about 1 meter. That means you could also use a half-meter long antenna, and a quarter meter, etc., for transception of a 300 megahertz signal although you do lose some gain not using a full-wavelength antenna, and there is the possibility of the signal being distorted... I'm a little fuzzy on the details.

      A side note: the common 100 MHz signal used near the middle of the FM radio spectrum is about 3 meters long. However, you can pick up the signal using a much shorter antenna, but it will generally be a half, quarter, etc., the length of the longest wave it's designed to pick up, and then the rest is done via frequency discrimination done inside the radio receiver, which uses electronic trickery to adjust, virtually, the effective length of the antenna. I think they attach a tank circuit to the base of the antenna, buy I can't remember for sure.

      Anyway, the reason you can see into the microwave while it's on and yet NOT get cooked by the 1000 Watts of electromagnetic radiation inside is that the wavelengths of microwave energy are long enough that the first photons get absorbed by the inside of the conductor, then repel other waves crashing into it afterwards. Meanwhile, the grid on the front is an ineffective antenna, so it can't really radiate either. The wavelength of the visible light from the light bulb inside however, is much shorter, and it passes through the holes with no problem.

      That barely scratched the surface of what there is to know about radio, and Faraday cages. Isn't science fun?!?

      August 19, 2012 at 5:08 am | Reply
  40. marcomarco

    wallpaper, or you could set a password on your wifi device. durrrr

    August 8, 2012 at 7:10 am | Reply
  41. Ummm

    Ummm.... I like all the broke college girls stealing my Wifi. Maybe I like their webcams to be on my subnet. Giggity.

    August 8, 2012 at 12:49 am | Reply
  42. Name elaine

    I don't want to harm my body. also with implants too is hazardous

    July 27, 2012 at 3:36 pm | Reply
  43. Name elaine

    I know cause I get the affects all the time. I just don't want to get anything to harm my brain.

    July 27, 2012 at 3:35 pm | Reply
    • thinkifyoucan

      Really? 2.4 GHz of really low powered, non-ionizing radiation effects health? Radio waves do not cause mutations to DNA, Radio waves, as well as all other forms of non-ionizing radiation do not cause cancer... not even close. While WiFi signals vibrate nearly 24 times faster than Z100 FM in NY, the signal only has enough power to go about 100 ft in open air with 40% humidity. Meanwhile, that cellphone must go for miles, that TV broadcast, goes for miles, and Elvis Duran in the Morning, goes for miles. All 3 of those rip through your body all day long. That pesticied filled tomato at the grocery store is more likely to cause disease that your little Netgear or Linksys router.

      July 28, 2012 at 10:23 am | Reply
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  44. agFinder

    I'd have to see the attenuation numbers over a year's time before I'd shell out what will certainly be a pretty penny. Unless the outer walls were completely sealed – no glass, (normal) doors, vents, etc. – it couldn't be more than -10db or so, if that. The real answer is to bump routers up to 15 or 20 Ghz. Not only would you get blistering speeds, but microwaves are much easier to attenuate and in the winter you could sit next to the router to warm up!

    July 22, 2012 at 3:14 pm | Reply
    • Jon Stewart

      If you are sitting next to the router, then why not just go with a wired connection?

      July 22, 2012 at 5:11 pm | Reply
      • elpfeifer

        I have wired everywhere in my house because WiFi makes me feel sick. I have "powerline" adapters that can be plugged into any outlet in the house. The security system runs the same way. I can plug a camera into any outlet and it goes back to my computer. It's like magic.

        August 4, 2012 at 12:36 pm |
    • jimmmyc1955

      15Ghz and up (actually 5Ghz and above) rapidly loose penetration abilities. 15Ghz would not allow those in another room to access the WiFi signal. And frankly – you won't get much faster since the speed limiter is not your WiFi router, or even your broadband speed but the backhaul network design and server performance. Or – having an 8 lane unlimited speed driveway doesn't do you much good if your street is unpaved and a 20mph limit.

      July 23, 2012 at 9:46 am | Reply
  45. Grumpster

    Hmmm...I wonder if this stuff can make a hat to replace those unfasionable tin foil ones that everybody's wearing lately.

    July 22, 2012 at 9:41 am | Reply
    • George

      They've got those, too.

      August 11, 2012 at 3:42 am | Reply
  46. elmondohummus

    "Scientists behind the product point to studies that say the overuse of wireless technology could cause harmful heath effects."

    LULWUT? The only way that causes harmful health effects is to make the user sit on his butt and not exercise. Wifi's effects on health has been studied, and no ill effect has been demonstrated. The author of this piece, as well as the "scientists" behind the wallpaper (since they're making the claim) need to refer to the WHO EMF studies, which equivocates the cancer risk from wifi with that of coffee (no kidding). And baby powder. In other words, simply not there, with only anecdotal evidence given that doesn't separate wifi out from other causes (no one only gets exposed to wifi and not any other carcinogen, source of radiation, etc. at all, not in modern society).

    Bottom line: This author forwards a disproven claim. No harm has ever been demonstrated.

    July 21, 2012 at 10:23 pm | Reply
  47. RFalls

    "Tin" foil works too, and it's cheaper. It also has the affect of blocking all signals for those that want to live "signal" free. Also make sure to run a ground wire thru it, it also works well for EDPs

    July 21, 2012 at 7:06 pm | Reply
    • elpfeifer

      Tin foil makes it worse, believe me. Copper scrub pads unrolled work great though.

      August 4, 2012 at 12:37 pm | Reply
  48. SixDegrees

    Uh – if your wireless router is set up without password protections, you deserve to have your WiFi signal stolen. And given that your signal is going to happily leak out through windows, floors and ceilings, I'm really not seeing the point of this product.

    July 21, 2012 at 5:41 pm | Reply
    • Roger

      ...."deserve" to have it stolen? we can all tell your likely tendencies here. ...because a woman walks down the street without padlocking her purse to her hidden vest and without a can of mace, she deserves to have her purse stolen?

      July 22, 2012 at 9:42 am | Reply
      • elpfeifer

        That's how they think, unfortunately. If they can hack it, then you deserved it.

        August 4, 2012 at 12:38 pm |
    • tron

      By your reasoning if you leave your check book where I can find it you deserve for me to drain your bank account.

      July 22, 2012 at 11:17 am | Reply
    • Not Available

      It should be pointed out that even with WEP or WPA1 encryption, it is possible to get into someones wifi given a fairly short amount of time.

      This wallpaper would be used primarily for security and isolation, meaning a business doesn't have it's wireless signal broadcast outside it's premises and isolation in that in say an apartment complex, the 3 standard 2.4ghz channels are very congested, this wallpaper would effectively isolate the signal to just your unit

      July 22, 2012 at 5:55 pm | Reply
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      August 22, 2012 at 4:04 am | Reply
  49. newsrell

    If you are unlucky enough to live in a crowded area where WiFi stealing is the fact of life, then the wallpaper might be for you. I live in the suburd where I leave my door unlock going to the supermarket, and I enjoy sitting in the garden with my coffe reading the news off my Ipad in the morning, chatting with friends in the afternoon, I would never touch these papers which will intefere with my (nice) way of life, thank you very much.

    July 21, 2012 at 1:24 pm | Reply
    • Marty

      You leave your door unlocked? What's your address?

      July 21, 2012 at 4:19 pm | Reply
      • Gustavo

        He doesn't leave his door unlocked, he leaves it " unlock " whatever that means.

        July 21, 2012 at 6:49 pm |
      • Grumpster

        Ok...nice to know you are not all that bright leaving your door "unlock." While you're outside, I'll be in there taking everything except your router and modem.

        July 22, 2012 at 9:43 am |
    • SixDegrees

      Or, instead of spending thousands of dollars on questionable wallpaper, you could just enable wireless passwords.

      July 21, 2012 at 5:58 pm | Reply
      • Chris

        Stealing a wifi password is incredibly simple, if you have some knowledge, takes about 30 minutes.....

        July 21, 2012 at 7:25 pm |
      • Greg

        WPA2 with a strong password is unbreakable by any civilian tech I'm aware of.

        July 21, 2012 at 7:57 pm |
      • agFinder

        Only WPA is easily breakable. The others are secure. Still your broadcast area is a good security point to monitor. No enterprise wants anyone intercepting a signal, regardless of encryption.

        July 22, 2012 at 3:05 pm |
      • Charlie

        There is absolutely no reason why any rational person would leave his/her door unlocked, no matter how safe you think you are. It takes a fraction of a second.

        July 22, 2012 at 4:31 pm |
      • jimmmyc1955

        Yes WEP can be eaisly broken. the question is – why would anybody with the skills to do that (and they are not that common) show up to steal broadband from just any house in any suburban housing plan? Geeks are the same the world over, stuck in geek land. In practical senses I would only worry about somebody breaking my WEP code if I lived in a building of geeks who want to bust those just for the fun. Broadband is free in so many places . . . be realistic.

        July 23, 2012 at 9:52 am |
    • agFinder

      Yes, there are places like this, and by definition people like Marty do not live there – that's what makes them nice places to be :).

      July 22, 2012 at 3:08 pm | Reply
  50. john

    A couple more thoughts: the amount of silver ink required to wallpaper all of the outer walls of your house will make this paper pretty expensive, and it will probably lose most of its effectiveness within a month or so, as the silver ink oxidizes. Silver oxide is not likely to be nearly as conductive as metallic silver.

    July 21, 2012 at 10:29 am | Reply
  51. Hadenuffyet

    Live underground.

    July 21, 2012 at 8:57 am | Reply
  52. JunkRat

    Faraday Cage, anyone?

    July 21, 2012 at 8:37 am | Reply
    • Grumpster

      No....I don't remember Daniel being put in a cage in LOST. ;-)

      July 22, 2012 at 9:44 am | Reply
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  53. mouse

    when they come up with an affordable paper(or paint) that is environmentally safe and and shields against the ever increasing levels of non-ionizing radiation we're being exposed to then i might be interested, until then this is gimmick material, a pretty waste of money

    July 21, 2012 at 8:35 am | Reply
  54. Josh

    There is a U.S. company that does this already in paint form, out of Virginia.

    July 21, 2012 at 1:17 am | Reply
  55. joeinalabama

    I suppose this takes the place of the tinfoil hates.

    July 20, 2012 at 9:00 pm | Reply
    • chiefsadler

      See, Alabama hasn't changed. Still a lot of hates....We use hat in the rest of country (well, with the exception of GA maybe...). aHAHAHA...kidding...

      July 21, 2012 at 8:26 am | Reply
    • smebber in alobamee

      us hi tec rockat citay red necks be warin pointy tinfoil hates down heer in sweet home alobamee n weebee burnin lower case t's in sume folks yerds ta reminds em taht its time ta go !

      July 21, 2012 at 3:39 pm | Reply
  56. Julie MS

    What about cell phones. I find mobile homes with metal outer walls block cell reception. This paper might do the same.

    July 20, 2012 at 8:36 pm | Reply
  57. Anon

    Let me see if I understand the logic here. I install a wireless router so that I can use my computer anywhere in and around my house (like on my patio). Then I put this wallpaper up in my computer room to block the signal, thus preventing anyone, including myself, from using the signal in and around my house.

    July 20, 2012 at 7:11 pm | Reply
    • minnow

      It's suppose to go on exterior walls to prevent the stealing of wi-fi.

      July 21, 2012 at 10:49 am | Reply
      • SixDegrees

        There are these things called passwords...

        July 21, 2012 at 5:35 pm |
      • Chris

        Once again Six Degrees, stealing a wifi password is simple, then I can access your files, basically see anything you do through your network....

        July 21, 2012 at 7:27 pm |
  58. al

    Interesting concept and product. Many nations have been working on this. The last one I read, a few months back, the paper blocked WIFI and mobile phone frequencies. But, it isn't commercially viable. Governments and large businesses use multi-frequency jumping, so their signal is protected, and individual homes can use encryption and passwords.

    July 20, 2012 at 5:13 pm | Reply
  59. James

    Bring on that wallpaper! I made to age 66 without seatbelts, bicycle helmets, cell phones, texting, mp3 player, wi-fi, etc, etc, etc.

    July 20, 2012 at 4:53 pm | Reply
    • John

      You must be a real blast at parties.

      July 21, 2012 at 7:54 am | Reply
    • John beck

      I made it to age 73 without that crap!

      July 21, 2012 at 9:51 am | Reply
    • lawrencewinkler

      I made it to 65 having used many forms of technology since I was 13, and made a career out of it. What a blast it's been.

      July 21, 2012 at 10:13 pm | Reply
  60. Nevarre

    It'll protect against NAS (nerve attenuation Syndrome). You know, the Black Shakes. Pharmacom has the cure.

    July 20, 2012 at 1:02 pm | Reply
  61. Howie

    The latest version of the tinfoil hat. . .

    July 20, 2012 at 12:57 pm | Reply
  62. JoePub

    Am I missing something? Couldn't you just encrypt your wi fi signal and require passwords?

    July 20, 2012 at 12:19 pm | Reply
    • SixDegrees

      Why, yes. Yes you could.

      You can also monitor your wireless router to see if anyone you don't know is using it.

      July 21, 2012 at 5:36 pm | Reply
  63. Annoyed Movie Goer

    Can it block cell phones and texting in movie theaters? Now that would be useful in controlling the morons there.

    July 20, 2012 at 12:07 pm | Reply
    • spcbooth

      NOT a safe thing to do... especially in light of the recent shootings in the Aurora, Colorado. I bet those folks sure are glad they could dial 911 from inside the theatre.

      July 20, 2012 at 1:09 pm | Reply
      • wavejump1100

        911 was no help. this lunatic was finished by the time police arrived. now if someone had a gun and could get a head shot, that might have helped. i think this wallpaper would be great in theaters, if someone needs to call 911 they can go to the lobby.

        July 20, 2012 at 9:15 pm |
  64. THX1953

    There are an awful lot of cars out there that could use a good painting with this!

    July 20, 2012 at 11:02 am | Reply
  65. John

    Bestbuy: would you like extended geeks quad warrenty on your wifi blocker wall paper?

    Customer: yes

    Bestbuy: would you also like wifi blocker curtains and blinds to go with your wall paper?

    Customer: sure, why not

    Bestbuy: would you like our agents to come over and set up your wifi blocker wall paper, curtains, and blinds?

    Customer: yes!

    July 19, 2012 at 7:27 pm | Reply
  66. EnoughAlready

    And by "American" you mean "French" as it was developed in France and the rights were sold to a Finnish firm.

    July 19, 2012 at 7:11 pm | Reply
    • Edwardo

      What can you say about some one who thinks the word is "walla"?

      July 20, 2012 at 12:01 am | Reply
      • Troop

        What would you say about the person that really cares ?

        July 20, 2012 at 9:32 pm |
      • Troop

        You BIG DUMMY. What do you think about that ?

        July 20, 2012 at 10:02 pm |
    • Meimei

      That's a smart answer to a tricky qustieon

      September 24, 2012 at 8:12 am | Reply
  67. cpc65

    In movie theaters? Yes please!

    July 19, 2012 at 6:44 pm | Reply
  68. DB

    But it will probably also block Cell phone signals. WiFi is generally at around 2.4 GHz, and cell phones operate around 900 MHz and 1.9 GHz (depending upon the technology). I think if you want to use your cell phone at home, you would have some problems

    July 19, 2012 at 5:09 pm | Reply
  69. Home

    Who still uses wallpaper?

    July 19, 2012 at 4:42 pm | Reply
    • Martha

      Wallpaper could be used to create a unique focal point in any room. It's a good thing.

      July 20, 2012 at 2:40 pm | Reply
  70. Troop

    I say wrap our fighter jets with that stuff and WALLA. A good cost saving strategy. Our entire fleet radar proof. Air carriers as well. Another smart American developed something great.

    July 19, 2012 at 3:30 pm | Reply
    • MIrosal

      Troop, that would not work. This wallpaper reflects the signals, it does not absorb them. As a former Navy Electronic Warfare technician, wrapping a fighter in this stuff would only enhance its radar signature, not hide it, as it allows signals to be bounced off of it with greater ease.

      July 20, 2012 at 1:19 am | Reply
      • J3sus Sandals

        But like Martha states, it can turn your carrier into a unique focal point. Gone is the battleship grey of carriers. Say hello to the carrier in...snowflake patten? Would scare the crap out of Somali pirates who've never seen a snowflake before.

        July 22, 2012 at 10:02 am |
      • Ever

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        October 22, 2012 at 3:13 pm |
    • damniel

      I believe the word you're looking for is voilà. not walla. And it was developed in France not the U.S. Stupid Americans!

      July 20, 2012 at 1:03 pm | Reply
      • Jay

        There are uneducated and under educated people in every country throughout the world. Making a blanket statement about an entire country sounds pretty unintelligent to me. I agree that Troop should probably read the articles a little closer and learn how to spell the word voilà.

        July 20, 2012 at 3:41 pm |
      • J3sus Sandals

        "Walla" is pretty much Australian (as evidenced by the Outback Steakhouse Menu), as opposed to "Wassa" which is a group of people from the Ivory Coast, or "Wasilla" a town in Alaska whose image has been done irreperable damage by the Palins.

        July 22, 2012 at 10:10 am |
    • Chillin

      I thought this was pretty funny. I also assumed Troop was joking. People need to relax a bit.

      July 21, 2012 at 12:06 pm | Reply
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