What is a QR code and how does it work?
A QR (Quick Response) code is a square barcode that stores data (a link, text, phone number...) in a way any smartphone camera can scan and read instantly, no manual typing needed.
Common uses
Sharing a website or social media link quickly, printing a code on a restaurant menu or brochure, or sharing contact details on a business card.
Tips for a code that scans reliably
Keep the code large enough if printed (not too small), and make sure there's clear contrast between the code color and background so cameras can read it easily.