A 3D scanner creates a 3D model. This 3D model consists of a point cloud of geometric samples on the surface of the subject. These points can then be used to construct the shape of the subject and in somr cases the color.
3D scanners have a cone-like field of view, and like cameras, can only collect information about surfaces that are not obscured. A 3D scanner also collects distance information about surfaces within its view. This allows the three dimensional position of each point in the scan.