"Can you hear me now? No? Must be some kind of denial of service attack, you still owe us for this portion of your contract."
Better hope that medical professionals and others who are "on call" aren't at that theater when the call comes.
Someone always has to ruin it for everybody.
How about denying tickets to any parents with small children after 5pm? Wouldn't want those portable alarm systems going off in the theater and bothering other people.
And how about testing for B.O.? People who eat with their mouths open?
Or we could go back to being upright citizens who wouldn't dream of behaving rudely in public.
I have to be accessable, if I get a call which can not wait i walk out of the theater to take the call. This is an issue of manners not technology.
Of course they could just build the theaters with a wire mesh shield into the walls to just block the signals.