Avi Bar-Zeev has been on the leading edge of AR and VR development for close to 25 years, with about 50 patents and several "billion dollar ideas" along the way. Most recently, Microsoft announced HoloLens, for which he lead the original concept and prototyping work in early 2010, convincing key influencers within the company that holograms were the future of games, phones, and user interfaces. In 1999, Avi co-founded the startup that became Google Earth and laid the foundation for a fun and extensible "browser for the real world." He also developed key world-building technologies for Second Life in its early days. Back in the 1990s, he helped lead and/or contributed to a raft of ground-breaking VR experiences for Disney. And way back in 1992, he joined his first VR startup, imagining VR contact lenses, CAVES, and many other things that are only now becoming possible.