We were able to use the (anonymized) cell phone data to actually track the (farm) trucks from parking lot to parking lot and count the number of trucks going to each parking lot and give (Unilever) a map … of what their supply chain actually looked like, all the way back to the (oil palm) concessions.
It's relatively straightforward to see via satellite imagery where deforestation has occurred, but harder to identify whether Unilever's suppliers have sourced crops from those areas.