The ring of a cell phone in a theater, or in a meeting, or an email arrives and pops up a message while you are writing. Common occurrences, all which some people are attempting to address. Still, I’m not sure that the efforts described are sufficient, since to be truly effective you would need an environmental broadcast that the tech would be aware of… like the theater sending out a signal ‘in a theater, in a theater’ constantly and then having the device have some rules that manage each and every situation. That’s a lot for an average user to keep up with. I mean, for some people the proper response is ‘take a message’, and for others it would be ‘use vibrate instead’… but how to handle tracking all those options? Egad…