Facebook’s much-anticipated anonymous social app is finally here, and it’s called Rooms. The app allows people to create a “room” on any topic. The goal, according to the app’s blog, is to transfer the utility of message boards to the mobile world.
Rooms uses QR Codes to share invitations to specific rooms. You can print hardcopies for offline use, or interestingly, share the code via email / chat and the Rooms app looks for the codes saved in your devices Camera Roll and allows you entry to that room.