Like with Duck tape?
This is not illegal unless:
You are going to drive the car and this is the only way it is held shut.
a door in your car is not fully shut.
Get a new car you loser.
sounds like a bad door latch mechanism.
If the door is shut then it's probably the switch in that door or wiring to it.
Because there is a problem with it.
Switzerland
Beacause it is broken, most likely.
to help the door shut more easily
the person who shut the door plain a simple
the door switches are inside the door lock its self
because a seat belt might be jammed
No, it would not be safe for you or other road users.