That said, a couple of attendees told me following the session that more relevant geographic data might be much more specific — what house did you grow up in — were the walls painted with lead paint, etc. Still, the macro-geographic data could be useful, especially for areas with known pollution and other environmental issues.

For example location/time data points can be used to readily identify an individuals actual working hours, sexuality, illegal drug taking, frequency of visits to fast food retailers etc. etc.