What is a QR Code? Types, Uses & How They Work
A QR code (Quick Response code) is a two-dimensional barcode that stores data — typically a URL — readable by smartphone cameras. Invented in 1994 by Denso Wave for tracking automotive parts, QR codes are now used by millions of businesses worldwide for menus, payments, marketing, and product information.
Updated 19 February 2026
How QR Codes Work
A QR code encodes data in a grid of black and white squares. When a smartphone camera scans the pattern, it decodes the data and performs an action — usually opening a URL in a web browser. QR codes can store up to 4,296 alphanumeric characters, though most contain a simple web address.
Types of QR Codes
There are two main types of QR codes: static and trackable. Understanding the difference helps you choose the right type for your use case.
Common QR Code Uses in 2026
QR codes have become essential tools for businesses of all sizes. Here are the most common applications:
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Restaurant menus
Digital menus that customers access by scanning a code at their table. No app download needed.
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Business cards
Link to your website, portfolio, or LinkedIn profile from a printed business card.
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Product packaging
Connect physical products to digital content like tutorials, reviews, or registration.
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Event check-in
Contactless registration and schedule sharing for conferences and events.
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Payment links
Direct customers to payment pages for invoices, tips, or purchases.
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Social media profiles
Drive followers to Instagram, TikTok, LinkedIn, or other social platforms.
How to Create a QR Code
Creating a QR code takes less than a minute with a QR code generator like QuikQR. Enter your destination URL, customise the design if needed, and download the high-resolution image. QuikQR offers free static QR codes and trackable dynamic QR codes with scan analytics from £4.99/month with a 14-day free trial.
Static vs Trackable QR Codes: Quick Comparison
| Feature | Static QR Code | Trackable QR Code |
|---|---|---|
| Data stored | In the QR code itself | In a redirect server |
| Can edit after printing | No | Yes |
| Scan analytics | No | Yes |
| Complexity | Denser pattern for long URLs | Simple pattern (short redirect URL) |
| Best for | Permanent links, simple use | Business, marketing, menus |
| Cost | Often free | QuikQR: Free (static) / from £4.99/mo with a 14-day free trial (dynamic) |
Frequently Asked Questions
Quick answers about What is a QR Code? Types, Uses & How They Work.
A QR code (Quick Response code) is a two-dimensional barcode that stores data readable by smartphone cameras. Most QR codes contain a URL that opens a webpage when scanned.
Basic static QR codes can be generated for free with QuikQR. Trackable QR codes with analytics are available on dynamic plans starting at £4.99/month with a 14-day free trial.
Static QR codes never expire — the data is encoded directly. Trackable QR codes on dynamic plans remain active as long as your plan is active. Static packs purchased as one-time payments never expire.
Open your smartphone camera and point it at the QR code. Most modern phones (iPhone and Android) automatically detect and decode QR codes. Tap the notification to open the link.