Keep it to yourself...

A new type of wallpaper developed in France, will effectively block wifi signal - adding another layer of security to your home network. The rights to manufacture have been acquired by a Finnish company for manufacture, and will be available in 2013.

Read more about it via SlashDot:

science.slashdot.org

And read more via l'informaticien (French Only):

www.limformaticien.com