The wallpaper can block Wi-Fi signals in the 2.45 - 5.5 GHz range, while simultaneously allowing television, FM radio, and mobile phone signals to pass through its surface. Metapaper can be applied to a variety of surfaces including concrete, brick and plaster, and won't be affected by decorative additions such as a layer of common house paint. No announcement has been made as to when this product might reach the U.S. market.
So far, the wallpaper costs $800 for 10 square feet.
Link -via Technabob | Photo: L'informaticien