QR codes look simple, but under the hood, they’re doing impressive mathematical gymnastics.

How QR Codes Store Information

QR codes encode data using patterns of black and white modules arranged in a grid. These patterns represent binary data that scanners decode into readable information.

Error Correction Explained Simply

QR codes include error correction, meaning they still work even if part of the code is damaged. This is why QR codes remain scannable on scratched posters or curved surfaces.

How Smartphones Scan QR Codes

Modern phone cameras detect the square alignment markers, read the data grid, correct errors, and open the embedded content automatically.

Why QR Codes Scan Faster Than Barcodes

Traditional barcodes store data horizontally. QR codes store data both vertically and horizontally, allowing them to hold more information and scan faster.

Why Understanding QR Codes Matters

Knowing how QR codes work helps you:
• Design better QR codes
• Avoid scan failures
• Choose between static and dynamic QR codes

👉 Next, read [Static vs Dynamic QR Codes: Which One Should You Use?] (internal link).