I recently came to know about the https://placenote.com/scanning .In this the user can scan the surroundings with mobile.Is it possible to make such app with mobile.Later I want the point cloud data to be exported into unity.Does AR foundation support this?
As far as point cloud goes you can access it with ARSessionOrigin.trackablesParent.GetComponentInChildren. You can get the 3D position of each point and then manipulate it as you wish to create a mesh or to just get the positions and reconstruct it in the Editor.