The Attenberger Connector connects your GPS or GNSS receiver with Android software for GIS, construction, surveying or machine controls. The app expects NMEA data via Bluetooth from a GPS or GNSS receiver, which in turn must be able to receive RTCM correction data via Bluetooth. The tablet must have a connection to the mobile internet (SIM card or WLAN). Standard deviations / accuracies and DOP values ​​are also displayed. The program overwrites the imprecise position of a GPS installed in the