John Krumm graduated from Carnegie Mellon University in 1993 with a PhD in robotics and a thesis on texture analysis in images. He worked at the Robotics Center of Sandia National Laboratories in Albuquerque, New Mexico for the next four years. His main projects there were computer vision for object recognition for use in robots and vehicles. He has been at Microsoft Research in Redmond, Washington, USA since 1997, and is currently a principal researcher. He concentrates on location tracking of people and devices and on methods to use location data to benefit the user. He holds 50 U.S. patents. He was a PC chair for UbiComp 2007, ACM SIGSPATIAL 2013, and is a PC chair for the ACM SIGSPATIAL conference in 2014. He served on the editorial board of IEEE Pervasive Computing Magazine, and is currently a coeditor in chief for the Journal of Location Based Services.