Cards being unlocked during gameplay?

Anyone have any idea what this is, or what they are. And how to view them. The only thing the popup says is check out out bungie.net for details. But their site has literately no info on this. And there is no in game thing I can find to see what these are. Anyone know?

Not sure why, but not know is driving me nuts right now.

https://alpha.bungie.net/ has your stuff

@corruptedevil: Thanks. Completely forgot about the alpha site.

Well, that is pretty lame. The cards have no info on them at all. They seem pretty pointless. If this is just an info dump for game world info, why is it not in the game itself. I was thinking it was like some sort of bonus collection or something. something that would help you in game.

I was hoping it might be an in-game card game in which you build your deck. Rage had that, I though it was fun.

I rather like them, maybe in the actual game finding certain types or sets unlocks stuff.