Dr. Walter Maetzler is a Full Professor of Neurogeriatrics at Kiel University and Deputy Director of the Neurology Department of the University Hospital Schleswig-Holstein in Kiel, Germany. His main clinical interest is Parkinson’s disease and other neurological disorders associated with functionally relevant movement and cognitive impairments. Dr. Maetzler leads a research group focused on the analysis and validation of mobile sensing technology in supervised (“laboratory or clinic-based”) and unsupervised (“home-based, everyday”) assessments of older adults and neurodegenerative diseases. He is involved as Principal Investigator, clinical lead, and work package leader in several international projects investigating the potential of mobile sensing technology to improve understanding of disease progression and response to treatment in chronic conditions such as Parkinson’s disease. The projects are always carried out with the active involvement of patients, and co-creation is an important scientific approach pursued by the working group. Dr. Maetzler is currently co-chair of the Movement Disorders Society’s Technology Working Group and a member of the Advisory Board of the Critical Path for Parkinson’s (CPP) Consortium.