Trading Card Redemption Codes - Destiny Wiki Guide - IGN

At various events throughout 2013, Bungie dispersed these trading cards to select international audiences. The cards feature detailed descriptions and concept art for various locations, characters and weapons, as well as codes that can be redeemed on Bungie.net.

Bungie has said that the rewards for redeeming each code will be small, in game content, though they won't specify what the content is until closer to the release date. There are 17 codes to redeem online.