#### Scope -> Passport Roles
1. System Admin
2. Maintenance (SMS, contractor) -> contorl device
3. Privileged (e.g. Fire station)
4. Property Manager
5. Property Security (食蕉)
6. Device?? (display, ststus, smart device)
7. User (login)
8. Normal user (With no login)

#### DB table:
1. admins
2. contractors
3. privileged_users
4. device_logins
5. users
6. property_managers
7. property_security
8. .
9. .
10. .
11. .
12. .
13. .
14. .
15. .
16. .
17. .
18. devices {id, sid, }
19. devices_status {id, device.id, }
20. modules
21. data (define by Device)
22. event_Log
23. locations
24. items (滅火筒，逃生指示LED，急救用品，緊急制)
25.