Get the latest tech news
Micro mirage: the infrared information carrier
Researchers fabricate the world's smallest QR code that, invisible to the naked eye, encrypts information to only be visible by an infrared camera lens.
Credit cards embedded chips, national mints printed watermarks, and high-profile locations installed retina scanners all for the same reason—to protect information. Sheng Shen, along with collaborators at Penn State University, have developed a pixel-by-pixel approach to visible camouflage with hopes of scaling it for enhanced infrared surveillance, optical security, and anti-forgery protections. “Our collaborators came to us with brochosomes—a ‘magic’ structure leafhoppers produce to create a cloak effect to hide from predators,” said Shen, a professor of mechanical engineering.
Or read this on r/technology