What are the uses of QR codes?

Related questions

1. What can QR codes do?
2. Are QR codes relevant in 2019?
3. Why are QR codes useful?
4. Do companies still use QR codes?

Tags

1. #simple
2. #codes
3. #holding
4. #information
5. #commonly
6. #address
7. #store
8. #personal
9. #different
10. #purposes
11. #addresses
12. #conferences
13. #messages
14. #types
15. #business
16. #welcome