Sign up for
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
When the toilet is filled with people waiting, it will be waste your times.
Knock on each of the doors on emergency situation, to confirm the presence of pesple in toilet is not usually troublesome.
If you determine the presence of people in toilet without go to the toilet, albeit in a busy life you just to be able to save times.
Seoul, South Korea
Sungnam, South Korea
Seok-min Gong, Jang-ha Jung, Cho-rok Kim