There is indeed a distinction between your own private property and a business that invites the general public in to do business. The cinema is still private property, but it&#x27;s still also public space.<p>That said, I don&#x27;t think anyone has ever attempted a ruling on whether chicken wire&#x2F;Faraday cage in the walls of public spaces is permissible according to the FCC. I&#x27;d doubt such an attempt would make it far; there are so many buildings made with metal siding which do a fantastic job of reducing cellular signals to useless levels.