Carpe ME 'em: Measure your gas emissions every day with Java ME tech (blogs.sun.com)
My AW (Awesome Wife) found this Java ME technology reference on how to use a Java ME technology-enabled app to measure your carbon footprint automatically from your cell phone using your GPS recorded movement (no manual entry needed).
See:
Measure your gas with Java ME tech
Here's a quote:
Those funds will go toward continued development of the Java-based mobile application, which automatically updates carbon information without the user having to manually input data. The application, now named Carbon Diem, uses GPS location info to automatically monitor your transportation. The app can tell if you drive, fly, take the train or walk...Now, I'd like to know how that Java ME app can figure that you are driving and not taking the train (assuming the average speed would be about the same to get from one place to the other). I guess if you're following train tracks for so many miles, you must be on a train... or in a car and really, really, really insane... :-)
Hinkmond- Java ME and J2ME