quick finding / Door in public toilet

If the doors are closed in a public toilet, the user have to check whether people are inside or not. The doors often look like locked, even if no one is inside. If someone in a hurry, it is very cumbersome to check all doors.
To solve these problems, quick finding has special doors and partition walls with magnets installed in it. From that the doors are always open with a regular gap when not in use, so the users can see the green line between the gap and recognize whether it is in use or not. In addition, a state of disorder could be avoided and the permanent use without electricity is possible.