Two possible solutions: Either use WiFi in range to trigger discovery mode of users (eg show ticket on lock screen). Or use WiFi to automatically validate and show information on screen.
Our solution uses WiFi to to a quick handshake between the controller and the passenger apps.
When the controller enters a vehicle their phone is providing a WiFi hotspot, which passengers' phone will automatically connect to. Upon connection, the passenger app sends a message containing current valid tickets as well as personal information. After receiving an acknowledge by the controller app, the passenger's phone disconnects from the WiFi.
We plan to deliver a proof of concept app pair that sends the message with the data (mocked data) and acknowledges the message. In detail:
The biography can be found at our corresponding TAIKAI profile pages: