Problem
Carbon monoxide (CO) exposure is a silent but serious health risk — particularly for pregnant people or the elderly. Affotek set out to create a wearable device that could monitor ambient CO levels and a user’s vital signs. They approached us to develop a mobile app that could connect to the wearable, show insights to the user, and notify relatives or carers when something was wrong.
Solution
In collaboration with CPI, who led on the design and development of the wearable hardware, we defined a custom Bluetooth interface to allow the device and app to communicate securely and reliably.
From there, we built an Android app that connected directly to the wearable and provided:
- A BLE interface for managing device connection and synchronisation
- User authentication and secure communication with the server
- Real-time and historical data visualisations across multiple metrics including heart rate, oxygen saturation, temperature, respiratory rate, blood pressure, movement, and ambient CO levels
- Alerts to notify relatives or carers when key metrics became irregular
We also developed the backend, including the server, database, and API. This allows the app to not only show moment-to-moment readings, but also track longer-term patterns and share those with medical professionals if needed.
Results
The Affotek system has now progressed through multiple iterations and is currently undergoing live trials. The combination of wearable sensor technology with a purpose-built app offers a proactive way to safeguard users from the health risks associated with CO exposure and other vital sign irregularities.
We helped Affotek to create a cohesive and user-focused solution which has the potential to provide peace of mind to users and their families.