Comment Giant Faraday cages (Score 1) 870
			
		 	
				Maybe it'd be worth bringing this suggestion up to your employer, but I could see a value in making testing rooms that are effectively giant Faraday cages.  It certainly wouldn't help against peer to peer network capable devices but it'd go a long way toward blocking cell/wifi.  It's not like it's hard or expensive to construct a room in such a way to block such signals.