Nintendogs + Cats makes some use of this feature. There is an item called "AR Camera" which works like the 3DS Camera, scanning the card except this time, your pet will pop up onto the card instead of Link or Kirby and such. However, if for example you use a card with Link on it, your dog or cat will appear on the card wearing a Link hat, and if you use a card with Pikmin on it, your pet will wear a Pikmin hat etc.