"Beacon Car" is the most innovative and smart way to share your car with relatives and/or friends. In the "map" section you can see in real time if your car is parked, or if someone else is using it.
To use "Beacon Car" just buy a Beacon of any company that produces them, create a single account that can simultaneously use relatives and/or friends and enter the credentials of the Beacon. Once you have completed these few steps, place the Beacon inside the car and the application will understand when someone drives the car, or if it has been parked.
"Beacon Car" will warn you with a notification every time you enter or leave the car.