Smartphone Based Indoor Navigation System Using Motion Recognition and Map Matching Technology Jan 1, 2015· Beomju Shin , Chulki Kim , Jaehun Kim , Seok Lee Changdon Kee Taikjin Lee · 0 min read Last updated on Jan 1, 2015 Authors Beomju Shin Ph.D Authors Changdon Kee Professor Authors Taikjin Lee Ph.D ← Optimal Selection of an Inertial Sensor for Cycle Slip Detection by Considering INS Output Errors Jan 1, 2015 Hybrid Model based Motion Recogniton for Smartphone User Dec 1, 2014 →