This is neon tape that can’t be seen in the daytime but glows in the dark. The idea is to place it around your house where accidents are likely to happen. It will help you find your way around your house in the dark. Not only that, but it is rather pretty.
If you’re the owner of a bar, café, restaurant, hotel etc which has a neon sign, you’d better check if all of the letters are shining as it should be. Because if not, it may look like one of these signs ;)