CompassData is your ''feet on the street'' for GPS data collection. Specializing in collection of Ground Control Data, GIS data for E9-1-1 and telecom applications. If you need field staff to collect data, verify accuarcy of imagery or Lidar data, contact CompassData for world-wide Service. We also maintain a dataset of more than 7,000 existing photo identifyable Ground Control Points we sell off the shelf. For affordable quality data collection contact CompassData.