Are QR codes still relevant 2019?

Related questions

1. Is QR code safe?
2. Will QR codes replace barcodes?
3. How does WhatsApp Web QR code work?
4. How much information is in a QR code?
5. What is a QR code and how does it work?
6. Where do QR codes come from?
7. Are QR codes still relevant?
8. Does anyone use QR codes anymore?
9. Can someone else log into WhatsApp?
10. Can QR code be copied?

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20. #apple
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22. #through