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 QR codes is quick and easy, but scammers often use them to disguise malicious URLs. Luckily, this great app will alert you if you scan something bad, making it a great first line of defense, ...

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 ...

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 ...

QR codes can help give brands a direct, transparent line to many of the insights that used to come from cookies without the ...