Scientists created a tiny matrix that stores data by etching its grid into a thin ceramic film with a focused ion beam.

A QR Code scan is like a raised hand in a crowded room. It's voluntary, visible, and tells you exactly who's interested. Compare that to website cookies, which are more like secretly following someone ...

Working with data storage technology company Cerbyte, Mayrhofer and colleagues were especially interested in identifying a ...

Engineers in Vienna have shrunk a working QR code down to a speck that's just 1.98 square micrometers across—small enough to ...