Tesco
Phoneshop
Designing the transition from a legacy till platform to Tesco's new till experience.
- My role
- UX Designer
- Timeline
- 4 months
- Team
- Product · Engineering · Store colleagues
- Discipline
- Interaction Design · Systems Thinking · Prototyping
Phoneshop till platform migration
The problem
A legacy till colleagues knew by muscle memory had to be replaced without slowing them down.
The approach
Mapped every legacy task, then rebuilt the flows around the ones that ran hottest.
The outcome
A new experience that felt familiar where it mattered and better everywhere else.
01
Overview
Add a short paragraph of context: what the product is, who it serves and why this work mattered now.
- Context
- Scope
- Constraints
02
The Challenge
Replacing a system people can operate without looking at it means respecting the habits it created.
03
Discovery
Research, stakeholder insights, data and a hard look at the existing experience.
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Research synthesis and affinity mapping
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Existing experience audit
04
Key Insights
Insight 01
Muscle memory is a feature
Keeping key positions stable removed most of the retraining cost.
Insight 02
Edge cases run the shop
The rare journeys were where the legacy till really earned its keep.
Insight 03
Confidence needs feedback
Clear system state mattered more than fewer taps.
05
Opportunity
What did the research tell us? Frame the opportunity as a design brief, not a feature list.
06
Ideation
Sketches, concepts, workshops and explorations.
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Concept sketches
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Workshop output
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Early explorations
07
Design
Wireframes, user flows, interaction design and high-fidelity screens.
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User flow
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High-fidelity screens
08
Iteration
How the design changed once real people got their hands on it.
Before — original experience
After — redesigned experience
09
Outcome
Measurable results where available, plainly stated.
+00%
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00%
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10
What I Learned
Keep this personal and honest — what you'd do differently, and what stuck with you.
11
Next Steps
Explore next
Add what you'd investigate with more time.
Improve next
Add what you'd refine or measure further.