Contact-Proximity-Interface: Proximity Communication Interface
| Source Element | Destination Element | Flow |
|---|---|---|
| Transit Fare Collection Station | Transit Traveler Card | request for payment |
| Transit Traveler Card | Transit Fare Collection Station | payment |
| Source Element | Destination Element | Flow |
|---|---|---|
| Transit Fare Collection Station | Transit Traveler Card | request for payment |
| Transit Traveler Card | Transit Fare Collection Station | payment |