Could this mean that you will never again hear a cellphone go off at a concert?
Developed by engineers at the Grenoble Institute of Technology and the Centre Technique du Papier—and making use of a conductive ink containing silver particles (it’s a passive block, not a jamming system)—the wallpaper will be marketed to people concerned about outsiders’ snooping on their private networks as well as those who, for health reasons, simply want to shield themselves from as many electromagnetic waves as possible.