This convenient hanger type plate can be used in a variety of situations. Plates repel water and are durable enough to bend and wont break. Safe to use around the water or outdoors. Just hang it on the door knob and you can say it "at work" around you and it is useful when you want to protect your private space during telework or important work. Depending on your ideas, this convenient product can be installed in a variety of locations, not only at home, but also at work or at school. Door Knob Plate Introduction Video: https://youtu.be/1h3S-zQIWMU