The Blue Sky

A sensor integrated wristband/mask that responds to the change in the air quality.

What is it?

It is a sensor integrated wristband/mask that responds to the change in the air quality. Worn basically on the wrist, it detects the smoke and the gasses emitted by biomass fuels and through the live feedback (visible on the object itself) lets the wearers know the density of the pollution in their surrounding. In the case of need the wristband unfolds and functions as a pollution mask.

How is it used?

It is worn either as detective (band on the wrist) or protective (mask on the face).

What technologies does it incorporate?

The core idea is based on a sensor that responds to gases like CO and smoke and is convenient for detecting indoor air pollution; to some extent similar to the MQ-2 sensor model.

The object also relies on thermochromism (thermochromic fabric dye) for the output.

How does it work?

It could be described as an air pollution mask. It is dyed sky blue and there is a sensor attached to it. When the air is clean the mask is like a clean sky. If the sensor detects pollution, gray spots start to appear on its surface. the more polluted the air is, the grayer it gets.

But, to take a step back and see again, the mask is designed to be transformed to a wristband (and vice versa). So first and foremost, it is worn as a monitoring object on the wrist that provides the wearers with live feedback regarding the air they are breathing. If the sky on the wristband turns to gray, it is time to wear it as a mask.

Who uses it?

-The wearer both for monitoring and protection.

-In further steps it could be utilized to map the pattern of air pollution and highlight the critical spots in a community. In that case, the data provided by it, will be used by people who could help (responders, doctors, caregivers, etc.).

Why does it help?

Of course having a mask as accessible as it being attached to your wrist is helpful to protect yourself from respiratory infections, but I also want to emphasize on the monitoring and informing aspect of this wearable. By providing a live, constantly visible and sensitive feedback (conveyed through the comprehendible metaphor of blue sky) this piece tries to nudge the wearers to change their behavior. If they are constantly faced with state of gray sky in their own home for example, along with putting on their masks they are more likely to be concerned about switching from solid fuels (biomass, coal) to cleaner and more efficient fuels and energy technologies or at least provide a better ventilation. This will also pave the way for further educations regarding health and energy.


Team's Location


Team's Occupation

University Students

Team Members

Moeinedin Shashaei, Hanieh Navipour

Focus Area(s)

Diagnosis/Treatment/Referral, Behavior Change

UNICEF Pillar(s)

Health, Education

These pages have been pulled directly from applications submitted to the Wearables for Good Challenge in 2015. They represent the work of the individual teams and have subsequently not been edited.


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