Resumen
Since 2012, several national and international projects on ambient assisted living (AAL) active and healthy ageing gave insight into the different steps of development processes where the requirements of the target group were not met or just failed to be realized. This article shall provide a summary of terms and requirements from the experience of practice and project work on the topic. This article is a reflection and guide for self-criticism for technical developers. Starting with some terms and how they are linked to each other gives an overview of the field of action for the projects, which our experience is based on. A mixture between literature and results of projects illustrates the requirement analysis as it was anticipated in recent years. The conclusion consists of recommendations for further research on requirements.