What is a QR Code?
QR Code (Quick Response Code) is a two-dimensional barcode that can be scanned by smartphones and QR scanners to quickly access information or perform actions.
Common QR Code Uses
- Website URLs: Direct people to your website
- Contact Information: Share your contact details
- Wi-Fi Access: Allow easy connection to Wi-Fi networks
- Product Information: Provide details about products
- Digital Payments: Enable touchless payments
- Event Tickets: Store and verify event entry
Error Correction Levels
QR codes include error correction capability to restore data if the code is dirty or damaged:
- Low (L): 7% of data can be restored
- Medium (M): 15% of data can be restored
- Quartile (Q): 25% of data can be restored
- High (H): 30% of data can be restored
QR Code Tips
- Keep the content concise for better scanning reliability
- Test your QR code before sharing it publicly
- Add a logo or instructions near your QR code to indicate its purpose
- If sharing physically (print), ensure adequate size and contrast
- Consider using a higher error correction level for printed QR codes