Phone paper
It may look like toilet paper but it is anything but that. It is a roll of paper that you are given upon entering certain areas in Japan, where instructions for wifi and other things are on it. Plus, it is primarily used to clean your phone screen for hygienic purposes.
No longer will you have to have a dirty screen all the time, collecting germs, bacteria, and other things. You can just keep it clean and save yourself the trouble of spreading anything around to anyone else. They really want people to be safe and healthy, why else would they think about this?