The symposium will last for two days, and will be followed immediately by the IEEE Virtual Reality 2015 conference. All areas of 3DUI research will be presented, including: 3D input devices 3D display and sensory feedback 3D interaction techniques 3D user interface metaphors Desktop 3DUIs 3DUIs for VR and AR Evaluation methods for 3DUIs Biologically inspired 3DUIs Human perception of 3D interaction Collaborative 3D interaction Applications of 3DUIs: games, entertainment, CAD, education, etc