Well in this specific example, what would they change to photo to? The case is to stop joyrides. Who would be able to take a joyride and end up with the odomete

Well in this specific example, what would they change to photo to? The case is to stop joyrides. Who would be able to take a joyride and end up with the odometer exactly as they had Photoshopped it to hours or days ago? But yes, depending on the application, photos can be manipulated. But that is stating the problem with using photos, not the timestamping app.