Have you ever thought about what a reversing camera is? It is basically a camera which can be fitted to any vehicle.
A monitor is placed in the front so the driver can see all angles which were previously invisible to them. The monitor is typically on the dashboard.
It will be also useful for you to find out that test results illustrate that auto equipped with reversing camera can greatly enhance rear visibility.
Although in theory fitting a reversing camera is not difficult, it is much better to get a pro suggested because you might have to cut into the bodywork of the car. In addition, the reversing camera must be placed in the right position as get maximum exposure at the rear of the vehicle.