-In case of outdoor activities
The basic idea of a carbon footprint calculation system is to figure out your personal contribution level to the global warming problem from such activities as moving a car or traveling by public transportation.
-The system can find the best way for travelling, energy save.
-In case of transit, the system can search you the nearest public transportation, close to your position now.
-The system can be calculated of carbon emission based on the traveling within a day(s), a week(s), a month(s).
>In case of indoor activities
-User can download facebook application and install in their face book interface for calculation of indoor carbon emission, based on the activities in their resident which according to energy used, such as cooking, cleaning, lighting etc.