QR codes are akin to the kind of barcodes you see scanned at the checkout line in a store. Masahiro Hara, working for the Japanese company Denso Wave, invented QR codes in 1994. Tasked with ...

Ever wondered how a QR code works? I built one from scratch to see the process up close and uncover the magic behind the ...

Bar codes store information along one axis, horizontally. QR codes store information in both vertical and horizontal axes, which allows them to hold significantly more data.

I feel like everyone knows what a QR code is at this point, but just in case let’s start with a brief explanation. A QR code is a square symbol with a unique pattern—a sort of fancier barcode.

The QR code — a square that contains a pattern of black and white squares of varying dimensions within — has since become ubiquitous, especially since the early 2000s, when cellphones with QR ...

The use of QR codes has become part of our everyday lives. Invented in 1994 in the manufacturing industry, the QR code sank into obscurity for years, only to make a comeback during the pandemic. Today ...