Toink will make users to grasp a short time using the facility with interaction drawing. By making space individually will also make users to feel safe and experience a new style of public toilets. The traditional Chinese painting also increases another atmosphere and reveals the space more refined. The user can draw images of flowers by using the finger moves on the panels. The ink marks also can become riotous flowing colour ink, and lead the users both outside and inside to participate in the interaction.The screen is used for contacting outside and inside of the door. The users will see the condition of the toilet user by the information on the screen. They can also have an interaction with a person who is waiting outside. It’s a very important for our society to think about looking after senescent. By combining sensors with doors, we can grasp the time of using a toilet and to react when an accidental condition occurred.