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OpenMined

MHCI Capstone

Role UX Designer
Time 6 months
Team 4 Members
Year 2026

Executive Summary

  • Led consumer-to-consumer use-case discovery for a privacy-preserving AI, translating dense PETs (Privacy-Enhancing Technology) concepts into buildable product directions
  • Co-designed with 50+ people across interviews and sessions; synthesized 275+ data points into a weighted decision framework across 36 candidate use cases
  • From open ideation to a chosen use case - validated and prototyped in 2 months, and presented directly to CEO Andrew Trask, who is looking forward to the final deliverable
Research overview stats: 50 primary research articles, 73 secondary papers, 10 SME interviews, 82 survey responses, 36 use case generation sessions, 44 speed dating sessions

Context

OpenMined builds privacy-enhancing technology (PETs) that lets AI models learn from sensitive data without ever seeing it. The technology is real - but where does it create practical value for everyday people? My team's job was to find the C2C use cases worth building.

Problem Space People need AI utility without exposing sensitive data - but PETs are invisible infrastructure, not a product yet.
Core Question Where does privacy-preserving AI create immediate, practical value for everyday people?
Deliverable A prioritized set of C2C use-case concepts with UX and AI ethics implications, ready for OpenMined to evaluate.

Challenge

  • PETs are technically complex -understanding what's actually buildable was a prerequisite to proposing anything meaningful.
  • Most "privacy" products treat it as a legal checkbox. The real opportunity was making it a legible, visible product quality.
  • Evaluating use cases meant weighing real desirability against technical feasibility and strict ethical constraints -across dozens of domains simultaneously.

Research Methodology

Six methods, each chosen for a specific job. Flip a card to see why - then tap "View results" to see the artifact.

SME Interviews

Engage subject-matter experts in privacy-enhancing technologies to ground our technical understanding.

We needed to know what's actually buildable before proposing anything. Experts caught our assumptions early and gave us technical ground truth we couldn't get from papers alone.

Primary & Secondary Research

Synthesize academic literature, industry reports, and emerging use-case documentation across the PETs landscape.

PETs is a fast-moving field. Secondary research let us map the landscape before spending participant time on what was already known -or already abandoned.

PESTLE Analysis

Map political, economic, social, technological, legal, and environmental factors shaping privacy-AI adoption.

A use case that ignores regulatory barriers isn't a real use case. PESTLE forced every idea to face the world as it actually is, not as we hoped it would be.

Competitive Analysis

Evaluate existing privacy-preserving solutions and their go-to-market strategies across key verticals.

Understanding what exists helped us find genuine white space -rather than proposing what competitors had already launched, failed at, or quietly dropped.

Assumption Mapping

Surface and challenge the core beliefs underlying different privacy approaches, then test them against evidence.

Our most dangerous design mistakes live in our assumptions. Making them explicit let us test them deliberately instead of building them silently into every decision.

Use Case Studies

Develop detailed scenarios exploring how privacy-preserving AI could solve real problems across sectors.

Scenarios made abstract possibilities tangible enough for participants to react to -the fastest way to learn what people actually want to exist in the world.

Approach

  • Mapped high-risk domains where data sensitivity and trust are mission-critical.
  • Scored 36 candidate scenarios against desirability, feasibility, and ethical risk to narrow to a shortlist.
  • Drafted UX concept flows showing how privacy guarantees would be made understandable in-product - not buried in settings.

Instead of treating privacy as invisible infrastructure, our solution makes protection visible where it matters most: at the moment a user is deciding whether to trust the system.

Ideation landscape 36 ideas narrowed to 8 worth testing
Quadrant map showing candidate use cases plotted by technology fit and market need, with 8 ideas selected for further evaluation

Where We Are Now

Use case selected

Informed Patient - why this use case won

We ran a weighted decision matrix across our top 8 ideas, scoring each on technology fit, market need, and regulatory barriers. Informed Patient won - the largest underserved market, with the best technology fit.

See the analysis
SWOT - Informed Patient Validation
SWOT analysis for the Informed Patient use case: Strength score 3.95, 58.5% of US adults already search health info online, clear opportunity in institutional scaling
User Journey Map Informed Patient
User journey map for the Informed Patient use case, showing key stages, touchpoints, and pain points

Accomplishments

  • Presented research to the OpenMined team -CEO Andrew Trask responded enthusiastically and is looking forward to the final deliverable.
  • Madhava, principal engineer leading the BioVault project, validated our technical direction.
  • Interviewed and co-designed with 50+ people across the full research arc.
  • In ~1 month, moved from open exploration to a chosen use case, validated it through interviews and testing, and shipped mid-fidelity prototypes.

More to come soon.

Conceptual exploration visual representing identity and privacy