Lai Carson

E-Wallet Prototype

A cross-platform e-wallet mobile app for toll payments

Dart
Flutter

This prototype was developed as part of my final year university project, where I worked in a team that collaborated with an industry client to develop a proof-of-concept e-wallet used for multi-lane free flow (MLFF) toll payments. As part of the front-end team, I designed a survey to identify weaknesses of existing e-wallet UIs, and used the feedback from over 200 respondents to guide the design of our prototype.

I implemented a collection of custom and reusable widgets (e.g., dialogs, modals, and buttons) to standardise the UI across the team.

I also contributed to the UI and back-end integration for several key pages:

  • The home page that displays wallet balance and provides quick access to other features.
  • The profile page that displays personalised user information, and allows users to edit their information.
  • The toll payment page that allows users to select and pay pending toll payments.
  • The road hazards page that includes an interactive map that displays real-time user location, active road hazards, and nearby points of interest, integrated with the Google Maps API.
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