3D scanners turn physical objects into their three-dimensional (3D) representations, without any contact. Traditional cameras and scanners capture a two-dimensional (2D) image. Whereas 3D scanners capture, height, width, and depth of an object, and potentially other aspects such as colour.
This information is used to turn these objects into 3D data on your computer. With 3D scanners, you can choose an object and, with the help of a 3D printer, print it back out within few hours. So you can recreate accurate-scale models of existing things, such as sculptures or body parts.
Uses of 3D scanners:
Prototyping and designing
Fixing or modifying household items
Manufacturing product parts
General purpose 3D renderings