The QR code at 30; still evolving, still changing face of commerce

This year marks the 30th anniversary of the QR Code, the ubiquitous scanning tag developed by a Japanese engineer that is ...
Business Insider

What is a QR code? A guide to the barcode's basics, why you're seeing it everywhere, and how to scan one

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 ...