QR Code or Quick Response Code is a 2D matrix of black and white squares that can be scanned with a digital camera on a smartphone or tablet. It provides easy and faster access to online information.
QR codes can encode the text, URL, phone number, and images.
How does a QR code work?
You use your smartphone’s camera to scan the QR code. Then the phone communicates with the website or application to which the QR code leads.
The QR Code Reader app on your smartphone reads the data and displays it on the screen.