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 ...

Quick Response (QR) codes need to be better used with a clear strategy in mind, and not be used for the sake of doing so. Badly implemented QR code campaigns may erode consumer interest, and this may ...

If we can crown a single winner for the last two years, it’s the QR code. Once an inconvenience, the obnoxious little black and white squares have become indispensable and hygienic ways to access ...