In the report Health at the centre, we look at different types of e-health. These entail more than just data collectives. Health apps are a known type of e-health, of which the pedometer or step counter app, measuring the number of steps you take each day, is a well-known example. It also entails PGOs (Persoonlijke Gezondheidsomgeving 'Personal Health Record'). These are digital records in which patients can follow or track therapy. PGOs are used, among others, in the mental health field.