Hiroyuki Sato is an associate professor at the University of Tokyo (Japan). His interests include digital identity technologies, information security, and programming language design and implementation. Sato is accredited as a Level of Assurance 1 (LoA 1) assessor by the Kantara initiative (kantarainitiative.org), established to accelerate the adoption of digital identity relationship solutions to support and simplify our connected world. He received a PhD from the University of Tokyo. He is also in the Editorial Board of IEEE IT Professionals magazine. For more, see http://www-sato.cc.u-tokyo.ac.jp/SATO.Hiroyuki/.