Carbon Hero

The Carbon Hero, winner of the British Standards Institute (BSI) prize for Sustainability Design, is a personal carbon calculator and works by tracking a person through their phone signal every time they go on a journey. This then allows the device to work out the method of transport the user is on, and from that calculate the amount of carbon dioxide going into the air as a result. The invention is in two parts: a keychain which calculates the relative location, velocity and pattern of a user's activity and the mobile phone which displays the carbon used and the amount of credits needed to be purchased in order to offset the amount used.

The device is currently configured to work in the UK, although it has also incorporated 1,000 thousand airports from around the world. In theory, a person can travel anywhere and have their journey included in the carbon footprint calculation as well.