I'd use it at home, just on exterior-facing walls. This would not only block any interference from neighbors WiFi/microwaves, but also won't let them see my WiF

I'd use it at home, just on exterior-facing walls. This would not only block any interference from neighbors WiFi/microwaves, but also won't let them see my WiFi traffic. Throw in a cell repeater in the wallpaper package, and it'd be perfect.