Speed without uncertainty
Cashiers needed fewer context switches, clear totals, and reliable payment state.
Case study 03 · Retail operations · POS + ERP + mobile
Keep every counter in sync.
ExtraPOS is a connected retail operating system for a growing supermarket business in Lautoka, Fiji. It brings checkout, inventory, accounting, and supply operations into one product family.
- Role
- Product and UX designer
- Focus
- Checkout speed and operational continuity
- Scope
- Research, product strategy, UX, UI, and handoff
- Surfaces
- Point of sale, ERP web, and mobile MVP
EXTRAPOS / COUNTER 04LIVE INVENTORY
ACTIVE CART14 items
- Fresh produce $18.40
- Grocery $76.10
- Household $53.70
TOTAL$148.20Ready for payment
scan · sell · reconcile · restock
2.65M
monthly transactions supported
40%
increase in checkout speed
30%
improvement in operational efficiency
01 · Business context
Growth exposed the limits of disconnected tools.
As Extra Supermarket expanded, its existing software could not keep checkout, inventory, and supply operations aligned. Long transactions affected customers while incomplete real-time data slowed decisions behind the counter.
The opportunity was bigger than replacing a register. The business needed one operating model across point of sale, ERP, and mobile.
02 · Framework
Double Diamond thinking inside a Scrum rhythm.
- 01
Discover
Observe checkout and business operations
- 02
Research
Interview cashiers, managers, and supply teams
- 03
Frame
Align user, business, and technology needs
- 04
Design
Connect POS, ERP, and mobile workflows
- 05
Deliver
Detail behavior and support implementation
03 · Research
Learn how the store really moves.
Research covered checkout, business administration, and supply chain work. Interviews with cashiers, managers, and operational staff surfaced the workarounds hidden behind everyday transactions.
Competitive review and qualitative sessions helped the team separate industry convention from the workflows that needed to be specific to this business.
One source of operational truth
Managers needed connected inventory, transaction, accounting, and staff information.
Real-time decisions
Supply teams needed new entries and exceptions to be verified without waiting for a desk.
04 · Product frame
Balance user, business, and technology realities.
Continuity
Core retail work should continue even when individual teams or surfaces change.
Visibility
Inventory and transaction state should be available where a decision is made.
Adaptability
The system should support custom layouts and business-specific operations without losing consistency.
05 · Product design
One language across three working environments.
More than 200 high-fidelity screens connected point of sale, ERP, and mobile verification. The system supports the detail of enterprise work while keeping repeated actions familiar.
03 views
06 · Mobile verification
Take exception handling closer to the work.
A focused mobile MVP let staff verify new entries and act on selected operational tasks away from a fixed workstation.
07 · At operating scale
Designed for the rhythm of a real store.
transaction lines
reduced from 2.5 seconds
less time to complete key work
Outcome · A connected retail system
The interface became part of the operating model, not a layer placed on top of it.