Project 04 — 2024

Enriching content recommendations on VRT MAX streaming

A prototyping study exploring how cross-platform data can sharpen recommendations for Flanders' public broadcaster, evaluated through expert reviews and focus groups.

In collaboration with
VRT MAX
The VRT MAX data profile: the outside services a viewer has linked, each with a switch of its own, beside the summary of listening and watching taste they add up to.

The challenge

To compete with major international streaming services, Flemish public broadcaster VRT explored leveraging cross-platform data — such as Spotify listening history and news reading preferences — to deliver richer, highly personalised content recommendations on VRT MAX (streaming platform). To guarantee user privacy, personal data vault technology was considered to give audiences full control over their data.

To evaluate this new concept, we built an interactive prototype to assess audience readiness, trust, and willingness to share third-party media data.

My role
Lead UX designer
Supervised the project, supported by two junior UX designers.
Partners
VRT MAX
Flemish public broadcaster’s streaming platform.
Status
Completed
2024

The process

01 — Concept ideation

Stakeholder alignment & defining data scope

To explore how cross-platform data could enhance content recommendations, we conducted a collaborative workshop with key stakeholders.

Given the early stage and exploratory nature of the project, we intentionally kept the scope broad by including a diverse range of data types — from standard demographics to media preferences like Spotify history and online shopping behaviour. Granting access to Spotify listening history, for instance, could surface music documentaries featuring frequently played artists.

Deliberately testing these more sensitive data types allowed us to identify clear user boundaries regarding data sharing.

VRT MAX Recommendations Demographics Age Name Home address Current location Netflix Streaming history My list Spotify Listening history Followed artists VRT NWS Read news articles Favourite themes Culture record Library borrowing Cultural activities Bol.com Purchase history Shopping wishlist Google Search query logs Browsing history Facebook Likes Friends list Followed pages
The data scope: nineteen data types, from demographics to media, culture, shopping and social behaviour.

02 — Initial prototyping

Wireframing to mid-fidelity prototype

After defining the core concept, we mapped user flows through iterative wireframing and built a mid-fidelity Figma prototype to prepare for expert evaluation.

The Figma canvas with the home-screen conditions, a data request pop-up and the privacy dashboard laid out side by side.
User flows mapped out in Figma.

03 — Expert review

Multi-disciplinary feedback walkthrough

To refine the prototype prior to user testing, we conducted an expert walkthrough with 5 specialists spanning UX, innovation research, privacy, and human-data interaction.

An expert walkthrough on screen share: the home screen with its recommendation tooltip open, the specialist's camera in the corner.
An expert walkthrough on screen share.

What the experts asked us to change

More granular user controls Per data type, not one blanket permission.
A simplified data request flow Fewer steps between the request and the result.
Clearer language for data-specific copy Name the data in the words people use for it.

04 — High-fidelity prototyping

Interactive prototype with privacy controls

Based on expert feedback, we progressed from a static mid-fidelity prototype to a high-fidelity, interactive Figma prototype. This prototype reflected a realistic usage scenario, prompting users with requests for various data types.

Key features integrated into the existing VRT MAX streaming platform included an enhanced recommendation section and a personalised user profile to control data sharing.

VRT MAX app icon VRT MAX
The VRT MAX streaming homepage on a laptop, its recommendation rows built from the linked services. The data profile on a second laptop, listing the linked services with their switches and the interests derived from them.
The high-fidelity prototype: the enhanced recommendation section and the personalised profile controlling data sharing.

05 — Focus groups

Evaluating concept readiness & willingness to share data

Because VRT prioritised validating the overall concept over usability testing at this early exploratory stage, we conducted focus groups with 19 target users.

Participants explored the prototype and shared their perspectives on the data vault integration and data permission requests. Each session concluded with an individual evaluation where participants rated various data types across two dimensions: comfort level with sharing and perceived value generated.

A focus group session: participants seated around tables facing a central screen, with one moderator presenting the concept.
One of the focus groups.

06 — Data analysis & results

Qualitative insights

Curiosity vs. concern While cross-platform personalisation (e.g., combining Spotify and Netflix data) intrigued participants, it also raised concerns about algorithmic bias and filter bubbles.
Transparency builds trust Clear, contextual data request prompts were perceived as significantly more transparent and user-friendly than traditional cookie banners.
Agency lowers barriers The ability to revoke data access at any time noticeably increased users’ willingness to share sensitive information.
Data context matters Participants were most comfortable sharing media consumption history, whereas sharing online browsing or social media activity faced strong resistance.

“I am so often in a filter bubble already and I am getting profiled so much that I want to break out of it. I want to get suggestions that I wouldn’t look for myself.”

Focus group participant

Quantitative insights: willingness to share data

As illustrated below, participants were most comfortable sharing media-related data (such as Netflix history and news articles), viewing it as directly beneficial for personalised recommendations. Conversely, online behavioural data — including browsing and purchase history — was perceived as highly sensitive yet offering low added value.

Higher perceived added value ↑ Perceived added value
← Less comfortable to share Comfort to share More comfortable to share →
Lower perceived added value ↓

07 — Impact

Enhanced user trust & agency Demonstrated that contextual data requests and easy-to-use access revocation controls significantly reduce privacy concerns.
Validated personal data vault concept Proved user readiness for cross-platform media personalisation when built on transparent and privacy-friendly foundations.
Actionable data sharing behaviour insights Identified critical boundaries regarding user willingness to share data, enabling VRT to refine its data strategy.
Global reach Presented findings at CHI 2025 (Yokohama, Japan), the premier international conference on human-computer interaction.
Presenting the study at CHI 2025 in Yokohama: the data profile screen projected beside the conference title slide.
Presenting the findings at CHI 2025, Yokohama.
Read the CHI 2025 paper