LAUSR

Author's summary The availability of smart mobile devices (SMD) has increased continuously in recent years and affects all areas of life including medical applications. In parallel, there has been significant progress in the development of SMD applications that measure vital signs, esp. blood pressure using photoplethysmographic signals (PPG). This has enormous potential for screening and monitoring arterial hypertension. Some of these applications are already marketed, but they do not yet meet the usual criteria of validation and are not yet recommended by professional societies. The present work gives an overview of challenges and pitfalls in the use of these PPG applications.