QR codes are everywhere: you can find them printed on the packaging of your latest gadgets, on business cards, included on presentations at conferences, and you can even see them painted on buildings. People and companies use them to store and distribute all kinds of information in a manner that is quickly accessible to anyone with a smartphone.
What is a QR code?
The term stands for Quick Response Code. QR codes are square barcodes. Like any other barcode, a QR code is nothing more than a way to store information in a machine-readable optical label.
What does a QR code look like?
QR codes store data using patterns of dark dots and white spaces arranged in a square grid. These patterns can be scanned an translated into a human-readable form with your smartphone’s camera.
We have QR codes that you, and nearly everyone else, have never seen.