His research focuses on empowering users to effectively manage their privacy in complex socio-technological systems. His research interests span privacy, human-computer interaction, mobile and ubiquitous computing, and the Internet of Things. Before joining the University of Michigan, he was a postdoctoral fellow in the School of Computer Science at Carnegie Mellon University. He received his doctoral degree and Diplom in Computer Science from the University of Ulm, Germany, and a Bachelor in Information Technology from Deakin University, Australia.