If you make a room’s walls and ceiling/floor electrically conductive (with paint or tin foil or wire mesh), you create a faraday cage. And as long as the gaps are small enough (proportional to the wavelength of the signal you want to block), nothing in those frequencies is getting in or out. A Faraday bag for your phone might be cheaper, though.
Absolutely, chicken wire in the walls (if property set up) will do a lot. My point was that I have never run into rigorous third party testing around the paint, so the marketing may make it sound far better than it actually is.
If you make a room’s walls and ceiling/floor electrically conductive (with paint or tin foil or wire mesh), you create a faraday cage. And as long as the gaps are small enough (proportional to the wavelength of the signal you want to block), nothing in those frequencies is getting in or out. A Faraday bag for your phone might be cheaper, though.
Absolutely, chicken wire in the walls (if property set up) will do a lot. My point was that I have never run into rigorous third party testing around the paint, so the marketing may make it sound far better than it actually is.