Well, you have a data recorder. Add time, you have your data that you can store in a database.<p>Recording daily activities and movements of cars (uniquely identifiable by plates) is pretty interesting already, associating cars to persons can be made later.<p>You might even be able to detect suspicious activity, e.g. &quot;KNHX-631 usually just commutes to and from work (shows up going downtown at around 8:30 every day, shows up going uptown 17:30 every day) and one day it showed up at 2:30 driving to leave the city, and returned at 5:30. There&#x27;s a person reported missing that night...&quot;