Why is Amazon asking for two step verification?

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Tags

1. #security
2. #verify
3. #authenticator
4. #unique
5. #amazon
6. #requires
7. #generated
8. #number
9. #through
10. #feature
11. #disable
12. #password
13. #enter
14. #addition
15. #verification
16. #devices
17. #phone
18. #trusted
19. #click
20. #computers