What do QR codes do?

Related questions

1. How does QR code work on Android?
2. Why does my iPhone say add cellular plan?
3. Can I scan documents with iPhone?
4. Can I scan a QR code on my phone screen?
5. Does Android have a QR scanner built in?
6. How does a QR code work?
7. Does Android have QR reader?
8. What can a QR code do?
9. How do I add a carrier to my iPhone?
10. Do QR codes work on all phones?

Tags

1. #instead
2. #codes
3. #modern
4. #response
5. #phone
6. #requiring
7. #phones
8. #transitory
9. #other
10. #scanner
11. #chunky
12. #short
13. #piece
14. #feature
15. #media
16. #information
17. #quick
18. #quickly