What Is a QR Code?
Learn about QR codes and how they work.
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Definition
QR (Quick Response) code is a two-dimensional barcode that can be read by smartphones and QR scanners.
How It Works
QR codes encode data in a grid of black and white squares. They can store text, URLs, contact info, and more.
Common Uses
- Website URLs
- Payment links
- Product information
- WiFi passwords
- Contact information
Types
Version 1: 21x21 modules (up to 25 alphanumeric characters)
Version 40: 177x177 modules (up to 4,296 characters)