Darkroom Door Restroom

While public restrooms along the street can be difficult to find, perhaps it is because the infrastructure is too expensive. With the advent of digital photography, there is probably an abundance of dark room doors on the secondary market. These doors could be used along the street for public restrooms...urinals may work best. A toilet mounted in the center of the revolving door would take up too much room, making it difficult to change into a superhero suit.

Use of the restroom would be a matter of entering and closing the door. The closed door would make it obvious that the unit is in use. The urinal could be mounted on the wall that the door is mounted on; usually along public streets there is easy access to the sewer for plumbing. Or the door could be mounted to a wall with a sewer grate immediately adjacent to avoid the plumbing altogether.