In addition to the approaches calculating personal emissions in the home, for travel and for flights the calculator adds on 2.7 tonnes of CO2 per year to everyone's footprint. The Hong Kong add-on represents emissions from HK's industrial, commercial and government sectors that provide goods and services to HK's people, but still leave a carbon footprint. For example shopping malls, government offices, construction and other sources outside the individual's control are all included in this figure. We include this figure because we want to capture the fact that not everything is covered by the carbon calculator. As this project expands we hope to provide more data about other parts of people's lives that carry a carbon footprint - and where they can take action.