Japan, land of the rising sun, cherry blossom and the upskirt photo, is now selling anti-voyeur clothing made of a new fabric that absorbs infrared light.
Apparently, voyeurs have been using infra-red cameras to take photos of subjects in order to turn IPLs (invisible panty lines) into VPLs (visible panty lines).
This is the same technology used by Dr. Nathan Bryce to reveal Mr Newton as an alien in The Man Who Fell to Earth.
Ooooh those naughty Japanese!
The new clothing is one of the positive results from the 2020 Olympics, when according to Sky News:
...the country's female athletes complained that explicit images of them competing were circulating on the internet after voyeurs had taken photos of them using infrared cameras.
Those cameras reveal the lines of a person's body or their undergarments. Local press in Japan say explicit infrared photography is a growing problem for female athletes in the country.