His research interests are in various domains of Mobile Computing. Prior to joining SNU, he has worked in the Location Based Services group at Garmin Inc., Olathe, Kansas and Georgia Southern University, Statesboro, GA. His work on SAVE (Sun-java based automatic vehicular accident reporting system), a sensor based technology to prevent and report an automobile accident has featured in leading international publications. His research and teaching in mobile platform is funded by Research in Motion, which now operates worldwide under the iconic name, BlackBerry.