The tiny QR code was constructed using silver atoms placed by an ultra-precise scanning tunnelling microscope.

As you probably know, we love our clocks here at Hackaday. Odd display technologies are always interesting to see, as are unusual encoding techniques such as binary, ternary or higher-radix number ...

Recently [mit41301] wondered about increasing the data capacity of QR codes, and was able to successfully triple the number of bits using color. He chose the new rectangular micro QR code (rMQR) ...

To learn more about our editorial approach, explore The Direct Message methodology. A QR code is, at its most basic, a contract between the physical and the digital — a pattern legible enough for a ...

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This year marks the 30th anniversary of the QR Code, the ubiquitous scanning tag developed by a Japanese engineer that is used in every facet of modern commerce. As the technology evolved, the impact ...

You've probably noticed a square barcode pasted to a graffitied light pole or on the back of a business card. That pixelated code, shaped in a square, is called a QR ...