The use of WiFi to position indoor mobile devices has drawn increasing attention in the past decade. In this talk, we will discuss two aspects of WiFi positioning: accuracy and security. Our discussion will start with the basics of positioning technology. Then we will review some well-known factors that will influence positioning accuracy together with the observations we made when building a system. In addition to those well-known factors, we found spoofing attack could be another source of serious positioning errors. We will give an analysis on the spoofing attack and present a signal verification method to deal with the attacks.
Dawei Liu is an associate professor with the Department of Computer Science and Software Engineering, Xi’an Jiaotong-Liverpool University, Suzhou. His research interests include distributed localization systems and location-based services. His work has been published in leading IEEE/ACM journals and conferences, one of which received the Best Paper Award from IEEE MiSeNet'14. He received his PhD in Computer Science from the Chinese University of Hong Kong and BEng in Electronic Engineering from Hunan University.