How QR Codes Work & Marketing Tips: Create Your Own for Free

How do QR codes store data? We explain the working principle, business use cases, and how to use our free QR code generator.

Point your camera, and you're instantly connected to a website or making a payment. QR codes have become an integral part of our daily lives. But have you ever wondered how data is stored in these black and white grids? Today, we'll dive deep into everything about QR codes.

Quick Response

Fast scanning speed and high data capacity

Error Correction

Data recovery even when damaged (Reed-Solomon)

1What is a QR Code?

QR Code stands for 'Quick Response Code'. It is a two-dimensional barcode developed by Denso Wave in Japan in 1994. Unlike traditional 1D barcodes that store limited numbers, QR codes can store a significant amount of data, including numbers, letters, and binary data. They are also designed to be scanned quickly from any angle.

2How QR Codes Work

QR codes represent information using patterns of black and white squares. The three large squares in the corners (Position Detection Patterns) help scanners determine the code's location and orientation. The rest of the area contains data and error correction codes, allowing the code to be read even if it's partially damaged or dirty. This uses the Reed-Solomon error correction method.

3Business and Marketing Use Cases

Website Links: Add QR codes to business cards, posters, and flyers to drive traffic to your website or social media.
Digital Menus: Restaurants place QR codes on tables for customers to view menus and order via their smartphones.
Wi-Fi Access: Allow guests to connect to Wi-Fi instantly without typing complex passwords.
Payments: Widely used for mobile payment systems like PayPal, Venmo, and Alipay.

4How to Use Our Free QR Code Generator

CheetSet provides a free, unlimited QR code generator tool. No sign-up required, and the generated codes are yours to keep forever.