From Location Tracking To Personalized Eco-Feedback: 
Results From The GoEco! Study

Todays modern smartphones are not only widely used, but also often equipped with GPS receivers and other sensors to allow constant monitoring of their users’ locations and in some cases even recognition of their activities. For this reason, these mobile devices are of particular interest for transport and mobility, where detailed movement data are needed for urban planning, smart city-related activities, and behavior change.