This year marks the 30th anniversary of the QR Code, the ubiquitous scanning tag developed by a Japanese engineer that is ...

QR codes — or "Quick Response" codes — are square-shaped barcodes that can be scanned by mobile devices. They are used for a variety of applications, from pulling up a restaurant menu to directing ...

The QR barcode has been enormously helpful during the COVID-19 pandemic, and its creator, Masahiro Hara, is thrilled. Since QR barcodes can handle about 200 times more information than the average ...