George Margetis is a computer scientist specialised in interaction design, Ambient Intelligence Technologies and smart environments, Human Centered Artificial Intelligence, X-Reality as well as networks and telecommunications. He is currently a Post-Doctoral Researcher with the Human-Computer Interaction Laboratory of the Institute of Computer Science (ICS) of the Foundation for Research and Technology Hellas (FORTH). His past research interests and developments included network traffic measurement and analysis in high-speed networks, resource control and service differentiation in wired networks. His current research focuses on interaction design and interactive systems development, Ambient Intelligence, Universal Access and Design for All. His recent Research and Development (R&D) work includes tools and interaction techniques for multimodal interaction, design and development of X-Reality systems, as well as personalization, decision making algorithms and recommendation services in the fields of Ambient Intelligence and smart environments, Human Centered AI design, visual analytics and interactive media.He has co-authored more than 60 scientific peer reviewed publications, including book chapters, articles in journals and in proceedings of international conferences and workshops. He is member of the Program Committee and Paper Review Committee in various international journals, conferences and workshops.