Industry
Logistics & TransportationService
Mobile app developmentTechnologies
Native apps, KotlinClient location
UKPeriod of collaboration
2022-2023Timeline
6 months
The client wanted to expand their reach and become a major player in the train travel market.
Due to government obligations, they needed the app upgrade completed in up to 7 months.
They aimed to attract new customers by offering online ticket purchases and mobile ticketing services.
They required the upgrade without increasing technical debt (accumulated development issues).
The app had to work as both a ticket store and a valid ticket itself.
Users should have the ability to load up to 5 tickets onto a physical NFC card for offline travel.
Ticket purchases had to be available from anywhere in the app — saved routes, history, or during trip planning.
The system needed to support tickets from multiple train operators.
Users had to be able to store an unlimited number of QR-code tickets in the app.
The upgraded app acts as an online ticket store and as a mobile ticket for users
Users can buy and store up to 5 tickets on a physical NFC card
Users can buy tickets anywhere within the app, including saved routes and history, or while planning a trip
The app displays and allows ticket purchases from other train companies, creating a one-stop shop for train travel
Users can store an unlimited number of QR code tickets in the app
Users can buy tickets directly in the app. That gives them the comfort of buying tickets anytime and anywhere with a WiFi connection. And there is no limit to how many tickets a person can get and store.
The users can buy the tickets anywhere on the app:
This makes the process simple and faster.
To use a ticket, users show a created QR code to the train controller after payment. A QR code ticket, stored in the app, is one of two options that online purchasing provides. What is the other one?
If the person buys more than one ticket for future journeys, they could send up to five on the portable NFC card.
To do that, users should hold their phones close to the card for ticket upload.
Tickets for the trip will be in hand, with no need for an Internet connection or a charged phone with the app and QR tickets.
To use a ticket, users should hold their NFC card on the card reader at the train station.
Adding new ticketing features to an existing app wasn’t simple. The purchase flow needed to work across multiple screens — including saved routes, trip history, and the main journey planner — without breaking the app’s architecture.
Instead of patching things in, we built a flexible, self-contained purchase flow that integrated cleanly into the existing system. It spans about 20 screens, includes NFC logic, and works seamlessly across the entire user journey — without touching the app’s core structure.
Connecting the app with the NFC SDK turned out to be more difficult than expected. The SDK was poorly documented, and the vendor offered no real support.
Despite that, we didn’t push the problem back to the client. Through trial, error, and a lot of debugging, we engineered a custom fix that made NFC ticket upload stable and reliable — even on older devices.
Purchases from Anytime, Anywhere The automated analysis retry feature works without an endless loading screen.
Easy Ticket Management All tickets are accessible within a single app, simplifying travel organization.
Offline Accessibility Users can store up to 5 tickets on an NFC card for offline use, eliminating reliance on the internet or a charged phone.
Streamlined Journey Planning Users can build their journeys and get all the required tickets within the app.
Comprehensive Information The app provides access to train schedules, route information, and journey updates.
The developers delivered the project within 6 months, exceeding the client's time constraint
Despite challenges, the team successfully implemented NFC integration and ensured smooth operation
The client received a solution that met their needs and helped them achieve their goals
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