Fiducial markers for augmented reality are provided. A fiducial marker can be located on an object in the environment and includes retroreflectors that reflect light back towards the source of the light. A portion of the fiducial marker is masked or obscured to form a pattern in the fiducial marker including a reflective portion and a less or non-reflective portion. The pattern of the reflective portion and the less or non-reflective portion stores data that can be read by a reading device and used to generate computer-generated content that is included in an augmented image.