Human-Centered Systems Design.

Human-Centered Systems Design.

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Client:

Perpetual

Role:

Researcher, Behaviour Change Analyst

Tools:

Field Observation, Qualitative Insights (pain points, habits, motivations) Quantitative Tracking (return rates, usage frequency)

Timeline:

Feb 2024 – Mar 2024

Platform:

Product-Service System (Physical Implementation)

Project Overview


Built a reuse system that hacks existing disposal behavior instead of fighting it. Partnering with Perpetual and SCAD, the project introduces a “sip, scan, return” loop that makes reuse feel as easy as throwing something away, turning cups from waste into circulating assets.

Project Gallery

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Challenge


Single-use culture is built on convenience. The moment a drink is finished, the cup is treated as waste and discarded without thought. Existing reuse systems fail because they demand extra effort, something most people won’t give in fast-paced, public environments.

The challenge was to design a system that fits seamlessly into this behaviour, making reuse feel as natural and immediate as throwing something away.

Impact


Expected Outcomes


+60% increase in return rates through intuitive bin placement
+45% reduction in single-use cup waste in pilot zones
–80% contamination compared to traditional recycling bins
+2× user engagement through simple scan interactions

Approach


Designing for Real Behavior, Not Ideal Behavior

This project combines contextual research, participatory design, and live testing to build a reuse system that works within everyday habits.


Understanding the Ecosystem
Research across Savannah, through surveys, observations, interviews, and a cultural probe, revealed a clear intention–action gap. While people expressed interest in sustainability, their actions were driven by speed, convenience, and habit.
At the same time, businesses were open to change but needed solutions that fit seamlessly into existing operations.


Co-Creation with Community
A participatory workshop at Daffin Park brought together users and businesses to shape the system.
Key design decisions, bin height, opening placement, and messaging were informed directly by community input, ensuring the solution felt intuitive and accessible.


Iterative Prototyping in Context
The system was tested live at Starland Yard to evaluate real-world behavior.

  • No-Tech Bin:
    A simple, restricted-opening bin relied on visual cues but led to misuse, with unintended waste collected.
    → Insight: Clarity alone doesn’t change behavior

  • Low-Tech Bin:
    A chip-activated system introduced light constraints and interaction, resulting in cleaner returns and more intentional use.
    → Insight: Small friction + feedback improves compliance


Designing the System
The final system integrates:

  • A physical return network that mirrors existing disposal points

  • A simple interaction loop: Sip. Scan. Return.

  • Incentives (15% discount) to encourage participation

  • Staff involvement to build trust and guide first-time use

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