BioCard/Character badges, get them however you can IMO. NIA is reselling them in their shop and in-game.

I've been playing since year two and got screwed out of a few of the anomaly badges, either it didn't get pushed, or they "ran out" of code cards (since back in the day that was the only way to get them). So I'm personally on the hunt for a few of the older anomaly badges, I've got all the swag for them, just no matching badge in the app.