The problem

The brief was to help shoppers scan groceries and pay from their trolley without joining the checkout queue. I contributed to shopper research and designed the experience around a small touchscreen behind a circular opening.

Working inside a circle

The enclosure shaped the layout. Login and numeric entry used the wider centre of the display, with separate states for registration, confirmation and recovery.

Making each scan clear

The scan screen brought the product, price and expiry date together, with quantity controls and clear confirmation before adding it to the basket.

Keeping checkout close

The basket kept its total and checkout action with the product list. Card entry unfolded one question at a time, giving each step room on the small display.

Learning with shoppers

Shoppers tried a clickable prototype. Their feedback led to revisions in controls, wording and navigation before handoff.

Results and role

The project ended at design handoff in 2018, covering entry, scanning, basket review, payment and feedback. I was the sole designer in an agency, working with founders and engineers on UX and UI, using supplied branding and hardware.