QR Codes
⭐ MasteredA QR code is a square pattern that stores information such as a web address. A phone camera can scan it to open a link.
QR stands for Quick Response.
All about QR Codes
A QR code is a square pattern of black and white blocks that stores information, such as a web address, text or contact details. QR stands for "quick response" because the code can be read quickly by a camera.
The phone reads the pattern and offers to open the link or show the information. QR codes are used on menus, tickets, adverts and product packaging.
Be careful when scanning a code from an unknown source, because a QR code can send you to a website that is harmful or trying to trick you.
🎮 Try it yourself!
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Real-life uses of QR Codes
- Opening a restaurant menu without touching a shared card
- Checking in to an event with a ticket
- Scanning a product to find out more about it
Frequently asked questions about QR Codes
Are QR codes safe to scan?
Usually, but a code can link to a harmful website. Check the link before you open it, especially if it came from a stranger.
Who invented the QR code?
It was invented in 1994 by Denso Wave, a Japanese company, to track vehicle parts.
Can a QR code store a lot of information?
Yes, a QR code can hold thousands of characters, although very dense codes can be harder to scan.