Easyknob by sooyoung choi from korea

When I went to the restroom at a restaurant, I saw a person who was confused by the door because he was not able to determine whether the door opened inward or outward, he tried both pushing and pulling before the door opened. At this moment, I thought that a door handle that made the opening of doors more natural without any confusion of which direction the door opens would be a creative solution to this problem.

The mechanism in the picture 4, allows the door handle to move naturally in the direction that the door has to go. Furthermore, the lines and contours of the handle indicate its direction of movement.