StarTrac works in the background to capture the relevant journey details when you are in motion to deliver your scores.
StarTrac is always on in the background and is automatically activated when you start a journey by detecting a faster and longer movement from one point to another.
StarTrac will not record a journey if your battery level is too low. To change this, you can adjust the battery level limit in the Settings menu.
Your total score is calculated from all your journeys which have been recorded on StarTrac. The score for a single journey is based on your driving skills, such as smooth driving (how you accelerate and brake), the time of day, the length of your journey by hours driven and phone usage. All scores range from 0 - 100 with 100 being a perfect score and very hard to achieve.