Once the user is logged in, the app shows the user the map to find the TwizyLine parkings. When tapping the customized TwizyLine markers the app displays the name of the parking, the number of available Twizys, as well as the remaining free spots. With just one tap the user can request a Twizy, then the app will inform the server about the request, and the server will choose the Twizy with the highest battery level and will order it to get out the parking. The app will then give the user a QR code to access the leaving zone through the turnstile.
The app has several mechanisms to ensure any situation is covered and properly inform the user if any error occurs through the process, lost of connection, server fall down, …