What is bravely default ar marker?

The Bravely Default AR Marker is a card that is used in conjunction with the Bravely Default game on the Nintendo 3DS handheld console. It is a small, rectangular card that features various markings and symbols that act as triggers for augmented reality features in the game. When the AR marker is held up to the 3DS camera, it will activate a virtual 3D image that appears to hover above the card. This can be used to explore, interact with, and battle enemies in the game. In addition to the game, the AR marker can also be used with other 3DS games that make use of augmented reality features.