I've actually seen photos of this technique used on Japanese trains, where it's evidently super-common for people to stare at foreigners for minutes on end without an ounce of self-awareness.
In my desktop Chrome, it does say "not secure" next to the link, so possibly the website is being auto-rejected by your browser for safety reasons.
So then, I'll just upload one of the three pics and copy-paste some text:
Through the years living in Japan, I heard many non-Japanese friends complain of staring in public. One such incident inspired this, a book cover for a fictional book called Why Do Japanese People Stare At Foreigners? by fictional author Masao Suzuki (coincidentally the ex-president of department store Matsuzakaya shares the same name).
The idea is simple, print out this cover and wrap it around a suitable book. Then once you get stared at in public to the point of discomfort, take out the book and start reading with the cover facing the starer. The person is then made aware of the situation in the most Japanese of ways, through non-confrontation.