24. Spatially Augmented Reality (SAR) HMD-VR Spatially Immersive-VR AR using HMD Spatially Augmented Reality e.g. CAVE Video or Optical see-through SAR, Shaderlamps
41. Find tag location using handheld Projector Photosensing Wireless Tags Many geometric ops R F I R F I D Interactive stabilized projection (Radio Frequency Id & Geometry) G Siggraph 2004