Why Do We Use QR Codes?

Examples

1. A restaurant menu has a QR code you scan to see the full menu on your phone.
2. A poster with a QR code lets you watch a video just by scanning it with your phone camera.
3. Your friend sends you a message via a QR code, and all you need to do is scan it to read it.

More examples

See also

• How Does a Smartphone Recognize Your Face?
• Why Do We Use Passwords for Security?
• Why Do We Use ‘Barcodes’ on Products and How Do They Work?
• How does the latest generation of brain-computer interfaces function?
• How Did the Internet Begin?

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