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August 9, 2024
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A major department store in Hsinchu, with multiple floors and heavy daily foot traffic, faced growing pressure to improve air quality transparency. Indoor Air Quality (IAQ) directly affects customer experience and employee health, and under Taiwan’s Indoor Air Quality Management Act, public venues are required to monitor, disclose, and take action on IAQ data in real time.
However, the existing monitoring setup posed several limitations:
To solve this, we deployed OOS alongside ChuanYu’s Air Quality sensors (AirBox) to create a fully encrypted, end-to-end monitoring infrastructure — one that securely delivers sensitive data and remains completely invisible to the public internet.
| Feature | Before OOS | After OOS |
|---|---|---|
| Data Transmission | Unencrypted data sent over public networks; vulnerable to interception | Secure end-to-end encryption over mobile networks via OOS; no exposure to internet |
| System Visibility | Devices addressable via public IPs or manual login | All devices hidden behind NAT; never exposed to public IP space |
| Management & Monitoring | Data scattered across isolated sensors | Centralized platform securely aggregates and visualizes IAQ data in real time |
The AirBox system supports real-time monitoring of key indoor air quality indicators:
All data is transmitted securely, never touching the open internet.
All data is encrypted in transit, never exposed online — even during multi-site transmission
Devices operate under NAT with no public IPs, eliminating attack surface and external visibility
Enables transparent IAQ governance in line with Taiwan’s IAQ law and corporate sustainability goals
Live alerts and encrypted failover prevent data loss and reduce operational risks
Future-proof interface allows seamless connection to HVAC and smart building systems — without compromising security
