QR codes (Quick Response codes) are those square, black-and-white patterns you've probably noticed on restaurant menus, product packaging, and advertisements. But what exactly are they, and how do they work?
The Basics
A QR code is a type of two-dimensional barcode that can store information. Unlike traditional barcodes that only hold data horizontally, QR codes store information both horizontally and vertically, allowing them to hold much more data in a smaller space.
When you scan a QR code with your smartphone camera, it reads the pattern and instantly takes you to a website, displays text, adds a contact, connects to WiFi, or performs other actions.
What Makes QR Codes Special?
QR codes have several advantages:
- Fast to scan: Your phone camera can read them in under a second
- Hold lots of data: Can store up to 4,000 characters of text
- Work even when damaged: Can still function with up to 30% of the code damaged
- Free to create: Anyone can generate a QR code at no cost
- Work from any angle: Don't need to be perfectly aligned to scan
Common Uses
You'll find QR codes used for:
- Restaurant menus (especially since COVID-19)
- Product information and instructions
- Event tickets and boarding passes
- Payment systems
- Business cards
- WiFi network sharing
- App downloads
- Marketing campaigns
How to Scan a QR Code
On most modern smartphones, simply:
- Open your camera app
- Point it at the QR code
- Tap the notification that appears
No special app needed - it's built right into your phone's camera.
Two Types of QR Codes
Static QR Codes: The information is permanent. Once created, you can't change where it points.
Dynamic QR Codes: These use a short URL that redirects to your content. You can change the destination anytime without creating a new code.
Why Businesses Love Them
QR codes bridge the physical and digital worlds. A printed poster can instantly direct customers to your website. A product label can link to video tutorials. A business card can add your contact info to someone's phone in seconds.
They're simple, versatile, and everyone knows how to use them.
Ready to create your own QR codes? Try QReasy's free QR code generator and start connecting your physical and digital marketing today.