If this app blows up, and every weed smoker gets a hold of it, we could be looking at the first tool to measure which country is happiest and highest at any given time. Who is Happy is a geolocation app, developed by some creative minds in Brazil, that invites people to share with the world when they’re smoking cannabis. By sharing their real-time activity, they’re adding to their country’s ranking (i.e. tally of smokers at that particular point in time). People can even track their own smoking habits via their profile. The app is more than just about counting heads: it’s meant to start and stir conversation around the green weed at a time when medical marijuana use is on the rise and its legality is still on the table for many countries.