A system and process for using telematics data to determine a vehicle operator. Telematics data is captured from a telematics device which retrieves data from a vehicle associated with a plurality of vehicle operators. A driver electronic signature is determined from the captured telematics data and then compared to determined driver signatures stored in memory and associated with the vehicle from which the telematics data is captured. A vehicle operator is then determined from comparing the determined driver signature with driver signatures stored in memory.