Mati Mõttus is a lecturer and researcher in the School of Digital Technologies, Tallinn University. His doctoral degree on computer science in the field of human-computer interaction focused on “Aesthetics in Interaction Design” (2018). The current research interests are hedonic experiences in human-computer interaction. The focus is two-fold. The use of psycho-physiological signals in detecting users’ feelings while interacting with technology and explaining emotional behavior on one hand. On the other hand, the design of interactive systems, based on psycho-physiological loops.