Dr. Giannis Karaseitanidis is a researcher in the Microwaves and Fibre Optics Laboratory at ICCS. He has obtained his BSc. in Electrical and Computer Engineering from the National Technical University of Athens (NTUA) on 2000. His PhD (NTUA, 2006) examined interaction techniques within VEs with emphasis on tracking systems and interaction devices. He has been successfully involved in many European projects dealing with VR, including the setting up of the INTUITION NoE on which he was a member of the management committee and leader of the Evaluation and Testing Working Group. He has published a number of articles in scientific journals and conferences on VR related topics and has acted as a reviewer in two journals on the same topic. Within the last years, he has been managing the VR lab of NTUA and has been working in the fields of HCI and tracking within VEs.