World's smallest QR code can store data for thousands of years ‪—‬ but you need an electron microscope to see it Scientists created a tiny matrix that stores data by etching its grid into a thin ...

Code Reveals Meta Smart Glasses Can Use 'Faceprint' Tracking, Raising Privacy Alarms ...

Scientists have created a microscopic QR code so tiny it can only be seen with an electron microscope—smaller than most bacteria and now officially a world record. But this isn’t just about size; it’s ...

An investigation has discovered that Meta smart glasses have an embedded “Faceprint” code that can track faces.