Viktor von Wyl leads the Digital and Mobile Health Group at the Institute for Implementation Science in Healthcare (www.ifis.uzh.ch). He is also the Scientific Director of the Swiss Multiple Sclerosis Registry at the Epidemiology, Biostatistics & Prevention Institute (www.ms-register.ch). Trained as in Epidemiology and Health Services Research, he has helped to establish and analyze large-scale observational health studies involving the general population (Corona Immunitas) or persons living with Multiple Sclerosis (Swiss MS Registry). Building on those experiences, his team aims to develop next-generation observational health studies by leveraging wearable sensors (e.g. activity trackers), data collection by speech-to-text, and methods of natural language processing.