Actually I am open to the idea of an (minimalistic, non-profit) app helping solve this. What kind of app, I'm not sure, but I'm open to all ideas, including technology based ones.

I only said that because you reminded me of an idea I had, for a social experiment that tries to bring some "social media" elements into an in-person setting, to see what happens. (I do wish I could afford a camera and someone to man it, I've been told several times that I'd go viral.)