I installed the materialize door handle helper in my apartment building and ask my neighbors for feedback. Some people didn't know what to do with them and suggested some signs or text would help to clarify it function. Therefor I made this variation of the door handle helper. It's also made to fit the square door handle.
Inspired by:
https://www.youmagine.com/designs/fast-printing-cura-project-for-the-hands-free-door-opener-by-materialise