Anti-Wi-Fi wallpaper

Better WiFi security could soon be just a few rolls of wallpaper away. French researchers at Institut Polytechnique de Grenoble, in cooperation with the Centre Technique du Papier, have developed a wallpaper that can block WiFi signals, preventing them from being broadcast beyond the confines of an office or apartment.

Unlike other types of signal-blocking materials, this one lets cellphones and other radio waves through. Ars Technica’s article mentions that the wallpaper should be available for sale sometime in 2013; I found out that the Finnish manufacturer licensing the technology is Ahlstrom.

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