Being bumped by an opening door bites. It’s an injury that’s probably not going to cause any ongoing issues outside of the minor discomfort but maybe you would just really like to avoid that sort of thing altogether. Make sure you always know when a door is opening with the Door Opening Warning Light.
This is exactly what it sounds like. It’s a light that you attach to doors. It will turn on when the door is being opened so you can hopefully see it and avoid any issues. Also, if you’re not in the way of the door, be alerted when someone is coming into your area.
The lights go on both sides of the door and runs on batteries. It features one of two Japanese icons or characters or you can just display a plain white light. You can get one of these for $142.