The VDE fact check mobility is a short, neutral introduction to a topic from the perspectives of various VDE experts to take into account as many points of view as possible. Every fact check begins with a brief definition of the terminology and provides a general introduction to the subject area. In addition to many facts, fact checks also contain further information on areas of application, the current state of research, new products and trends, national and international activities as well as the current state of standardization and standardization projects.