The Breathing Note

The brief: "Pressure companies to reach respectable air quality levels in their work place."

In Hong Kong, the CO2 levels in offices are at an alarmingly high level. A simple air quality test wouldn't be enough for companies to take actions, in this environment, the pressure to lose workforce because of the air quality would be a lot more effective. Using a pigment that reacts to the CO2 level in the air by changing color, I thought we could make a very interesting ink. By playing with the change of colours and visibility of the ink, I had an idea...