The primary technology behind 3D scanning is the use of laser scanning or structured light techniques to capture the shape and dimensions of physical objects. 3D scanning involves various technologies, such as LiDAR (Light Detection and Ranging) and photogrammetry, which convert the object's physical properties into a digital 3D model. This technology is widely used in industries such as manufacturing, architecture, and entertainment for creating detailed representations of real-world objects, enhancing visualization, and assisting in design processes while minimizing manual measurements.