Smart Checkout Prototype: Interaction Design in Figma by Barbara MelloniSmart Checkout Prototype: Interaction Design in Figma by Barbara Melloni

Smart Checkout Prototype: Interaction Design in Figma

Barbara Melloni

Barbara Melloni

Smart Checkout Prototype: Interaction Design in Figma.

Project Type: Interaction Design / Prototype (Concept)
Role: UI/UX & Interaction Designer
Tools: Figma (Variables & Conditional Logic)
Timeline: 2025

Overview:

Checkout is where e-commerce loses the most users.
This concept prototype tackles the most common friction points: quantity adjustments, price updates, and shipping selection.
Using Figma's variables and conditional logic to simulate a fully dynamic, realistic flow. No static screens, no click-through illusion. It behaves like a real product.

The Problem:

Most checkout prototypes show the happy path. This one was built around the moments that cause drop-offs: updating a quantity and not seeing the price change instantly, choosing a shipping method without understanding what it actually costs, making a change and losing your place in the flow.

Key Interactions:

1. Real-time item updates

Quantities can be increased or decreased with totals recalculating instantly. When an item reaches zero it disappears automatically, keeping the cart clean without a separate "remove" action.
Real-time item updates

2. Smarter Shipping Selection

Users toggle between Normal and Pro modes, each showing different shipping options and pricing with a seamless transition. The design makes the cost implications of each choice immediately visible.
Smarter Shipping Selection

What made this technically interesting:

Both interactions are powered by Figma variables and conditional logic, not manually linked frames. This means the prototype responds to user input the way a real product would, making it genuinely useful for developer handoff and stakeholder presentations, not just visual review.

Takeaway:

A checkout that gives users real-time feedback reduces hesitation and drop-offs. This prototype demonstrates that with the right Figma setup, you can test and validate dynamic interactions before a single line of code is written.
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Posted Jun 5, 2025

A Figma prototype simulating real dynamic checkout behaviour: real-time price updates, smart shipping selection, built with variables and conditional logic.