When a (League of Legends) match is started and a player is in a live match, Zoe sends a gamecard to the infochannel. There, the players and champions of the own and the opposing team are displayed with their ranks, their mastery and their mindset (win/loss series). The gamecards are sent in while the game is still running and will get deleted afterwards.
You can also get champion tips for every champion played in a game.
Under each gamecard there is a Déjà Queue button. It shows all players from the current lobby that you (or the selected player) have recently played with, so familiar names can be identified at a glance directly in the infochannel.