It's totally possible to to anonymize location data for this study. The idea is that while the mobile IP has location track logs instead a fair sampling of actu

It's totally possible to to anonymize location data for this study. The idea is that while the mobile IP has location track logs instead a fair sampling of actual travels is provided where a travel is two locations some person visited at some point in time after each other where locations are treated identical if they fall in some grid box of n km coursity. In fact such datasets are available by Telecom providers.