this is illegal and known as Nötigung, which might get you in trouble.
If someone parked in my spot, that I have paid for, when I want to use it- I'd defo park behind with a note saying where we are or mobile number- and then give them a piece of my mind. TBH, I don't mind if they use it when we are not there (the whole of this year so far !!!) but ...
As we parked behind them- we left a note saying which flat we were in - and then gave them a piece of my mind- face to face
But if someone uses your paid parking spot, without a note with their phone number, you have to what, leave your car where if there's no other spot?
Use a public paid spot and send this tresspasser your invoice or how?
Why am I thinking that this is an expat problem? Reading this forum, people got reported to the police for much much less then occuping somone else's parking spot.
Two completely different things.
I don't suppose any of you remember the days when each C/Kanton had a directory of each number plate, with the name of owner and their address- and each household had one. My dad would look up any car parked anywhere near any of his 'secret' mushroom spots!
How can opt out from this registry?
Edit: I found out the response to my question, this could be done online for canton Zurich in less than a minute here: https://www.zh.ch/de/mobilitaet/fahr...gregister.html