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From Confusion to Completion:
diconium
2023-2024
I worked on a feature for a client in the automotive industry that enables users to upload their personal profiles into a vehicle, invite others to do the same, and manage preferences through both the mobile app and the in-car HMI. I joined the project at an early stage and helped shape the core concept into a defined, validated user experience across platforms.
My tasks included refining the requirements based on the user journey, refining the user flow, creating a mid fidelity prototype and supporting the UX research.
My Role
UX Designer, with a supporting role in User Research and UI.
The Challenges
Simplifying a complex concept into a seamless experience, while maintaining clarity and adding value to the user’s experience.
The Results
A mid-fidelity prototype and a defined concept for how profile uploads should be handled across touchpoints.
Key Takeaways
Designed for non-traditional interfaces and diverse user contexts, ensuring seamless consistency across multiple touchpoints.
Designed a unified experience that meets user needs while aligning stakeholder priorities across multiple brands.
Task success rate increased from 60% to 100% between test rounds, showing that design iterations directly resolved the usability issues that had previously blocked 40% of participants.
In usability testing, 4 out of 5 participants (80%) described the registration process as ‘easy’ or ‘simple,’ indicating high perceived usability.
Leveraged contextual user research to uncover edge-case scenarios that drive real value for users and the business, integrating direct user feedback into new use cases.
The Project
Contextual visualization of the welcome screen in the car's infotainment system, and the vehicle's info screen on the driver's mobile phone.
Note: In order to maintain client confidentiality, this case study showcases a simplified version of the original work. The screens have been modified and stripped down to just the essential elements for the purpose of illustrating the concept.
State of the Art
When I joined the project, a basic concept and a brand-specific design system were already in place. My initial task was to refine the concept and ensure visual consistency with the brand’s standards. We started with a defined user journey for three distinct personas. Based on these journeys and their requirements, we developed the full user flow for two main touchpoints: the brand’s mobile app and the in-car HMI. I created a mid-fidelity prototype that captured the entire interaction across these platforms.
Throughout this phase, we also maintained ongoing communication with the brands involved in the project. As clients of our client, it was essential to ensure that their specific requirements were also addressed effectively and integrated into the final solution.
Excerpt of the user flow and corresponding prototype screens, focused on the error cases.
Research and Iteration
Once we had a functional prototype, we conducted remote interviews to validate the proposed flow. The goal was to assess whether our concept aligned with user expectations and if it added tangible value to their experience with the vehicle.
The feedback was largely positive - users easily understood the concept and completed the test scenarios without major difficulties. They praised the ease of use and overall convenience of the system. However, we observed that one of the three use scenarios resonated more strongly with users. Additionally, some participants expressed confusion regarding a specific security feature, prompting us to revise that part of the flow.
We used these insights to iterate on the prototype, improving the clarity of specific interactions and refocusing on the most valuable use scenario. The updated concept was then prepared for handover and implementation.
Overview of some prototype app screens for the vehicle owner's flow.
Overview of some prototype app screens for the invited user's flow.
Mockup of an infotainment display with the profile selection screen.
Overview of some infotainment screens designed for the prototype.
Expanding the Concept
After finalizing the initial concept, we began exploring how to broaden its impact. Drawing on insights from user interviews, we identified additional use cases and held a workshop to define the new requirements and user needs. This expansion aimed to further increase convenience and operational efficiency, reaching a wider user base.
Our team successfully pitched the expanded concept to stakeholders, who responded positively and approved it for further development.
Excerpt from the slide deck created to pitch the concept to stakeholders.
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