Does anybody use QR codes?

Related questions

1. Can I print a QR code?
2. Do consumers use QR codes?
3. What was the first QR code?
4. Can a QR code be used more than once?
5. How do I scan a QR code with Huawei?
6. Can I use WhatsApp Web in Mobile?
7. How many QR codes can be generated?
8. Where is WhatsApp QR Code?
9. How do I get a QR code for a Google review?
10. Can QR codes be photocopied?

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