Exler, Anja; Sebastian Kramer, Miguel Angel Meza Mart´ınez, Christian
Navolskyi, Michael Vogt, and Michael Beigl

Among others, location changes and activity level are indicators for state changes of patients suffering from affective disorders such as Bipolar disorder, Borderline personality disorder or depression. It is a common means to assess this information via self-report questionnaires. Usually, these are sent out either randomly throughout the day or at fixed points in time. However, this might lead to missing records of location changes. We propose to rely on event-triggers: send out self-report prompts when a location change is automatically detected.