I am a Professor in the School of Computer Science and Engineering at UNSW Sydney, Australia. My research interests include Internet of Things, blockchain and distributed ledgers, data analytics, pervasive and mobile computing, crowdsourcing, privacy and security. I have published over 200 peer-reviewed articles and delivered over 35 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 and an ACM Distinguished Speaker.