Ohan Oda is a Ph.D candidate in Computer Science and a member of the Computer Graphics and User Interface Lab. He is currently developing the Goblin XNA infrastructure, which is a platform for research on 3D user interfaces, including augmented reality and virtual reality, with an emphasis on games. He is broadly interested in applications of mobile augmented reality systems in the field of recreation and entertainment, including virtual sports and gaming. His thesis topic is Multi-user Interaction Techniques in Augmented Reality.