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) ...

Scanning a QR code is quick and easy, but scammers often use them to disguise malicious URLs. Fortunately, this amazing app ...

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 ...

For the longest time we’ve been using UPC bar codes to store strings of information in a compact space on both product labels and people in dystopian sci-fi movies. But as our needs grew and became ...

QR codes, originally developed as two-dimensional matrix barcodes for rapid data acquisition, have undergone significant transformation and expansion in application. Their evolution from simple ...

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 ...