Keep the door opened

The best security mechanisms are useless if there's no one who cares. This picture was also taken at the airport in Frankfurt. Apparently, the person responsible for the room was too annoyed in opening the door every time he enters the room.

The room on the photo filled with toilet accessories, as you can see on the next picture.

At first, it doesn't look like a big vulnerability, but it's the first possible entry to a social engineering attack. Someone could take some papers, the appropriate clothes and a broom could pretend to be an employee. Perhaps this could lead to further intrusion to the airport. And as you can see, you could enter the room without being asked what you are doing.

Perhaps the airport is starting an awareness campaign for the stuff sometime to improve the understanding of the security implications by leaving non-public rooms open and unattended.