The author, Yoon (Dong Yoon Park, 박동윤) is a designer, creative technologist, and author from Seoul, Korea. Since 2016, he has been publishing Mixed Reality apps and sharing design and development stories. He has been leading the design effort for the open-source project Mixed Reality Toolkit (MRTK) as a Principal UX Designer at Microsoft’s HoloLens & Mixed Reality design team. He was listed on Next Reality’s ’30 People To Watch In Augmented Reality 2019.