Wii Speaker Channel using a key included with Daigasso! Band Brothers DX for the Nintendo DS.
Nintendo Everything and Wii Fanboy speculate that the Shop Channel's new feature could potentially be used to redeem codes included with games for everything from free Wii Points to downloadable content and Virtual Console titles. Might we suggest a code that, when entered, simply rewards users with smiles? Nintendo certainly has a lot of them to go around.