You will be warned by EmergencyCam recognizing a flashing colors.
EmergencyCam produces alarm in response to the blinking lights such as roadworks, approaching of the emergency cars.
EmergencyCam should run with low CPU power and save battery power. So EmergencyCam captures video at a low resolution and at low frame rate.
It means that you can reuse no longer used iPhone4 locating back seat in the car and let it watch behind.