BMW Comfort Access is a keyless entry system that uses a smart key that never needs to leave your pocket. The vehicle can detect the smart key from about 5 feet away, and once the key has been detected you can unlock the car by simply touching the door handle. You can also unlock and open the tailgate by waving your foot under the sensor in the rear bumper. When the system detects that you have entered the cabin it enables the Start/Stop button, allowing you to easily start (or stop) the car. When it comes time to leave the car you can lock all the doors with a press on the exterior door handle. The smart key can also be used to store personalized settings, such as seat, steering wheel, and mirror adjustments. With BMW ConnectedDrive and Remote Services you can call the BMW call centre to lock or unlock the vehicle, or check its status. You can also use the My BMW Remote iPhone app to unlock the vehicle, flash the lights, or honk the horn.