What did Wilhelm Hormann conceptualize in Germany, termed "home alert"?

Answer

Hausnotruf

Wilhelm Hormann, working in Germany during the early 1970s, was developing a framework for ambulatory and non-ambulatory care that he specifically termed *Hausnotruf*, which translates to "home alert." While his initial intent was rooted in creating a method to record and share data with biomedical field scientists, the underlying structure formed a significant philosophical groundwork for what would later become Personal Emergency Response Systems (PERS). This early conceptual work preceded the consumer implementation focused purely on personal safety signals.

What did Wilhelm Hormann conceptualize in Germany, termed "home alert"?
inventiontechnologySafetysystemdetection