PaceTrail NB-Feedback uses additional data like antenna device orientation, environmental factors, neighbour cell signal strength, neighbour cell sector
orientation and uses it to improve accuracy over time.

Additionally improvements are made with remapping AGC (Automatic gain control) factoring levels used in RSSI calculations. All of this data is fed to a feedback control loop that uses GPS to make corrections. The result is a significant 25-35% accuracy over time compared to multicellular tracking alone.