Contact-Proximity-Interface: Proximity Communication Interface
| Source Element | Destination Element | Flow |
|---|---|---|
| Olympia Smart Parking - Parking Locations | Personal Information Device | payment device update |
| Personal Information Device | request for payment | |
| Personal Information Device | Olympia Smart Parking - Parking Locations | payment |
| Olympia Smart Parking - Parking Locations | payment device information | |
| WA-DES Smart Parking Locations | payment | |
| WA-DES Smart Parking Locations | payment device information |