There is no end to the damage caused by misuse of infrared cameras and videos and voyeur through swimwear, sportswear, and innerwear. There are even malicious incidents where such images spread on the Internet.
The anti-fluorescence dye (for nylon) developed by Yamada Chemical effectively cuts the near-infrared rays used for transparency, and this effect can be achieved by adding it during the dyeing process. Its outstanding ability to prevent see-through photography has been praised and is being used in sportswear and school swimsuits, and the number of schools that have adopted this anti-see-through swimsuit has increased every year since its launch in 2010. In the near future, the anti-transparent function will become a standard feature for school swimsuits.