Case Studies

Real people. Real actions. Real data.

Qii78 delivers measurable recycling and behaviour change in high-footfall environments
— with verified results and zero hardware.

Qii78 Intro

Every environment is different — stadiums, festivals, campuses, public spaces — but the challenge is always the same:  unverified recycling and no visibility into behaviour.

Qii78 solves this by turning every disposal into a verified data point.

Below are real examples from live deployments.

AIA Carnival 2025 (Hong Kong)

High-footfall family event

Multi-week

Footfall : Tens of thousands daily

3,717

Items recycled

1,357

Unique users

24%

Repeat engagement

24%

Repeat engagement

58 kg

of waste diverted

Strong

accuracy in mixed waste streams

What we learned:

Family environments respond extremely well to instant rewards. Behaviour becomes habitual within days. Peak recycling occurs around F&B phases.

Event Gallery →

Download Data Snapshot

Hong Kong Rugby Sevens (Kai Tak Stadium Pilot)

Large sports event

3 days

Footfall : 100,000 daily

Environment : High movement, fast consumption

954

Items recycled

399

Unique users

7.5 kg

Repeat engagement

High

engagement among younger fans

Material

accuracy improved with bin scanning

What we learned:

Fans respond strongly when actions are rewarded instantly.The system handles peak-time surges effortlessly.Accuracy increases dramatically when bins are scanned.

Event Gallery →

Download Data Snapshot