In this day of hand washing for 20 seconds or using hand sanitizer, how can you be assured that those people walking out of the bathroom are doing either one of those things?
That was a question that has now been answered by public restrooms in Japan. That answer has been given to us by the help of through public restrooms in Japan. Now you can see if a person has actually done their bit house clean their hands. While kind of creepy, there is also a bit of relief.