What's the difference between a QR code and a barcode?

Related questions

1. Where is my QR code on my iPhone?
2. When did QR codes start?
3. Can QR codes store images?
4. Are QR codes back?
5. How were QR codes created?
6. What is a dynamic QR code?
7. What information is stored in QR Code?
8. What is use of QR Code?
9. Are there different types of QR codes?
10. What QR code contains?

Tags

1. #similar
2. #concerning
3. #readable
4. #contains
5. #quick
6. #response
7. #abbreviated
8. #regular
9. #barcode
10. #often
11. #unlike
12. #vertical
13. #dimensional
14. #attached
15. #information
16. #which
17. #horizontal
18. #machine
19. #directions