Panicos A. Kyriacou is a Professor of Biomedical Engineering and Director of the Biomedical Research Centre at City, University of London, UK. Prof Kyriacou has a long track record in basic and applied research in Photoplethysmography (PPG). His primary focus is the utilisation of PPG for the innovation of new disruptive technologies for the early diagnosis of disease and the facilitation of unobtrusive health and fitness monitoring.