Dr Rainer Hattenhauer holds a doctorate in physics. He works as a teacher at a grammar school and is a freelance consultant and an author in the IT sector. His current publications focus on the use of text- and image-generative AI tools in work and everyday life. Dr Hattenhauer has published several dozen books in Germany with renowned publishing houses, including a textbook on computer science, as well as introductory works on operating systems, smartphones, digital gadgets and an encyclopaedia on modern computer technology.