Scalable Self Check-Out
Project Overview:
White-Label for European Retailers. Embedded Touch Interface
Services
UX/UI Design
Client
Fujitsu Portugal
Self
Check-Out
Business Need
Fujitsu’s new generation of self-checkout systems — Genesis II and Mini-Express — were designed to serve as white-label solutions for retail clients across Europe. Each deployment needed to reflect the visual identity of the purchasing brand, while maintaining a unified interaction model that could be reused across devices, languages, and store formats.
Challenge
-
Flexible in branding (typography, colour palette, logo placement)
-
Modular in components (adaptive layouts for bagging, scanning, and payment modules)
-
Optimised for usability across hardware variations and touch performance limitations
My Responsibilities
-
Facilitated stakeholder workshops (product, dev, retail ops)
-
Conducted in-store user testing with real operators
-
Designed reusable UI components and layout templates
-
Supported hardware-software integration sessions
-
Delivered adaptable prototypes aligned with branding constraints
-
Mapped UX metrics during testing: error rate, task time, misclicks, scan retries
Research & Testing
Approach
Me and the project manager have defined 12 core checkout interactions. From scanning to payment, and tested them with operators in real store environments.
Measurements included:
-
Completion time per task
-
Interaction errors
-
Click heatmaps and hand movement tracking
-
Brand perception and visual clarity
Findings
-
Brand-neutral UI lacked clarity without clear affordances
-
Low contrast and poor button hierarchy caused hesitation
-
Confusion between bagging area feedback and scan confirmation
-
Need for larger touch targets in high-traffic environments
Design Solutions
I started with wireframes and after i have designed a modular user interface that could be:
-
Branded with any retailer’s visual identity
-
(colours, fonts, logos)
-
Deployed across multiple formats (Genesis II with full cash handling, Mini-Express for cashless express checkout)
-
Maintained via shared components to streamline development and onboarding
-
Compliant with accessibility standards (W3C AA contrast, min. touch targets, consistent iconography)
Scalability
-
Component-based layout system
-
Style layer abstraction for easy theming
-
Prototypes prepared in neutral greyscale and coloured variants
-
Translations and RTL support included at UI level
Results & Impact
-
Over 15% reduction in task errors during validation
-
Visual interface adaptable to multiple brand guidelines without rework
-
Faster onboarding time for operators due to consistent patterns
-
Deployment-ready UI kits reused in multiple European retail chains
-
Positive feedback from field testers in both hypermarkets and express store formats
Reflection
This project deepened my experience in:
-
Designing white-label UI systems for hardware-embedded environments
-
Balancing customisation flexibility with usability and performance
-
Leading research across multi-stakeholder contexts (product, ops, engineering, marketing)
-
Creating components that scale across countries, cultures, and retail store formats
