I think this is a great idea (for a different app). It could also have location-based reminders and messages from others, all in a protected, safe environment, for companies and other teams that interact together. Also for personal stuff (like someone remembering things, remembering files and getting messages from friends on special locations). I would like to write that, but it would require a switched-on GPS, which would kill the phone battery in 2 hours.
Ex employee walks into 10am meeting and app says here is the files for this meeting, ex scrum sheet for the day.
Or walk into the cafeteria and the app says here's the files ex menu and cafeteria rules.