Does this apply on private property, or on property with sufficient signage? I've often thought about opening a bar (or movie) theater where all wireless communications are blocked, to force people to not use their phones. Obviously I'd put up extremely big and obvious signs stating that, and I'd only be blocking if you were inside my building. Legal? EDIT: I wouldn't be blocking anyone from setting up a wi-fi hotspo…
If it was legal, I wouldn't want to go there, since it prevents you from dialing emergency response. I would think you could passively block it (via paint). But probably can't actively block it (jamming).
...Just like you couldn't prior to about 1995 when cell phones were not a thing.
And let's be perfectly honest, if you really need to dial emergency response in a bar, there's a damn good chance the bar tender will do it on the wall phone, or someone can step outside the door and do it.