LiDAR
What Is LiDAR?
LiDAR is a light-based depth sensor. On compatible Apple devices it helps the camera understand distances and room geometry.
How iPhone LiDAR works in a room scanner
The sensor helps estimate depth. A LiDAR room scanner uses that information, together with the camera, to help build a measured floor plan as you walk the space.
How accurate is an iPhone room scan?
Useful for planning, not guaranteed for construction. Lighting, clutter, reflective surfaces, and how you move all affect the result. Review the plan.