A group of researchers at the cm.Design.Lab from Tokyo Institute of Technology are developing a Mixed Reality Tool prototype that includes a virtual room with virtual furnishings that are viewable using an Oculus Rift headset. The home interior simulation design tool has virtual furnishings with corresponding real world analogs called Tangible User Interfaces (TUIs) that when manipulated by the user will move the virtual object in real time within the virtual environment. The 3D printed TUIs are tracked using an augmented reality marker system that allows the user to move the virtual furnishings throughout the digital environment, trying out new room layouts and testing out combinations of different products. You can read more about Mixed Reality over on 3DPrint.com: http://3dprint.com/116948/tokyo-tech-mixed-reality/