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Fabric channel to calculate and record the emissions from the user's travel records.
Integration with Map apps to make it easier for user to record trips.
Some way to verify the mode of transportation (ie drive, bike, fly, type of car). Could it be based on origin, destination, and time of travel to calculate the average speed and verify that this is reasonable given the mode of transportation?
The travel information of the user may need to be kept private, while the calculated emissions should be auditable. One solution is to create a hash of the travel record which is stored in Fabric, so that the emissions calculations could be verified against the travel records, which are stored privately.
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