A QR code is a machine-readable matrix barcode and it stands for “quick response” code. You can use the camera app on any phone to scan a QR code. After being scanned, the QR code will send the user ...
QR (quick response) codes have been around for nearly 30 years. Developed in 1994 by a Japanese engineer for the purpose of tracking components in car factories, they have evolved into a highly ...
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