DriveNtell is a powerful, easy-to-use, smartphone/cloud-based system that scores your driving behaviour & provides objective feedback on potentially inefficient & unsafe driving events By using the phones GPS functionality when you are driving, the DriveNtell app works in combination with the TomTom LINK100 ODB plug in device for your vehicle to identify how and when you can improve your driving technique and enhance your safety when driving for work. Warning: Continued use of GPS running in the background can dramatically decrease battery life.