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) ...

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 ...

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Make a QR code in Chrome, Adobe, ChatGPT Plus or one of the other options detailed. QR codes let people access information with a smartphone; instead of typing a URL, you point your smartphone camera ...

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 ...