The tease is featured prominently in the game for a reason, so we’ll probably just have to wait until the French publisher is ready to tell us more. Interesting stuff, though.
The other is more interesting, however: located on wooden crates, the QR code links to a video of a Fallout-esque cartoon character and a map. There are three icons suggesting that this is multiplayer related, and the buildings look distinctly like the ones in Far Cry 4. So, what is this all about? Well, honestly, it could be anything, from promotion for the upcoming Pagan Min DLC all the way through to some kind of mulitplayer mode.