Among the many changes brought about by the pandemic is the widespread use of QR codes, graphical representations of digital data that can be printed and later scanned by a smartphone or other device.

World record tiny QR codes could store terabytes on a sheet, offering storage without power or cooling requirements anywhere ...

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 ...

A team of researchers at TU Wien recently announced that they have "etched" the smallest QR code ever on a ceramic film. Covering an area of ...