I am an Associate Professor in the School of Computer Science and Engineering at UNSW Sydney, Australia. My research interests include Internet of Things, blockchain, pervasive and mobile computing, crowdsourcing, privacy and security. I have published 175 peer-reviewed articles and delivered over 20 keynote talks and technical tutorials on these topics. I regularly serves on the organizing committee of a number of IEEE and ACM international conferences. I currently serve as the Area Editor for Pervasive and Mobile Computing and Computer Communications. I am a Senior Member of both the IEEE and the ACM.