How do access tokens work?

Related questions

1. What is an Application Token?
2. What is Dropbox API?
3. How secure and private is Dropbox?
4. What is token in API?
5. What are access tokens used for?
6. Are ++ apps safe?
7. Are third party apps bad?
8. Is Dropbox free for personal use?
9. What happens when Dropbox is full?
10. Can I tag files in Dropbox?

Tags

1. #verifies
2. #token
3. #proceed
4. #server
5. #needs
6. #match
7. #browser
8. #there
9. #stored
10. #allows
11. #decodes
12. #access
13. #destroyed
14. #attached
15. #system
16. #something