I'd assume they would have some opt in, or allowance for either federated learning or sharing of anonymized sensor data. Google is a huge advantage here, they

I'd assume they would have some opt in, or allowance for either federated learning or sharing of anonymized sensor data. Google is a huge advantage here, they have both the spatio-temporal intent of the user as well as the physical flow feed. There is so much position data flowing off android phones, that they are able to see the whole topology.