Key Pain Points
- High cost of key recovery and PIN reset after check-out
- Cannot open for viewing/maintenance when no one is present
- Lock status (battery/access log) is not visible
Solution Architecture
- Apartment smart locks (fingerprint/PIN/card/APP)
- Admin APP: batch issue/revoke PINs and access rights
- Tenant APP: remote unlock, temporary PIN sharing
- Low-battery alerts and access log push
