Steven Feiner is professor of computer science at Columbia Engineering, where he directs the Computer Graphics and User Interfaces Lab and co-directs the Columbia Vision and Graphics Center. His interests include human–computer interaction, augmented reality and virtual environments, 3-D user interfaces, knowledge-based design of graphics and multimedia, mobile and wearable computing, computer games, and information visualization. Feiner has been doing augmented reality research for over 20 years. His lab created the first outdoor mobile augmented reality system using a see-through display in 1996, paving the way for current smartphone outdoor augmented reality applications, and pioneered experimental applications of augmented reality to fields such as tourism, journalism, maintenance, and construction. He is coauthor of Computer Graphics: Principles and Practice and of Introduction to Computer Graphics, received an Office of Naval Research (ONR) Young Investigator Award, and was elected to the CHI Academy. Together with his students, he has won the Association for Computing Machinery (ACM) User Interface Software and Technology (UIST) Lasting Impact Award and best paper awards at ACM UIST, ACM Computer-Human Interaction, ACM Virtual Reality Software and Technology, and the Institute of Electrical and Electronics Engineers International Symposium on Mixed and Augmented Reality. Feiner received his Ph.D. at Brown University.