Why do we write PIN code on letter?

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Tags

1. #where
2. #addressee
3. #enables
4. #delivered
5. #basis
6. #destination
7. #indicates
8. #which
9. #really
10. #correct
11. #student
12. #takes
13. #place
14. #reach
15. #address
16. #letter
17. #important
18. #delivery
19. #through