Hi! Would the Lidar sensor and the depth map data allow you to extract accurate measures of an object/person?
ARKit Depth Map
Copying the answer from a similar thread https://developer.apple.com/forums/thread/650321
"If you have an iPad Pro with the LiDAR sensor I would recommend you to give the scene depth feature a try yourself, e.g. with the Creating a Fog Effect Using Scene Depth and Visualizing a Point Cloud Using Scene Depth developer samples. Seeing it live in action in your own environment will give you a much better feeling for it's accuracy and whether it works for your particular use case than any numbers. Lastly, note that we provide an ARConfidenceLevel for the scene depth buffer - the accuracy of individual depth values highly depends on this confidence level."
"If you have an iPad Pro with the LiDAR sensor I would recommend you to give the scene depth feature a try yourself, e.g. with the Creating a Fog Effect Using Scene Depth and Visualizing a Point Cloud Using Scene Depth developer samples. Seeing it live in action in your own environment will give you a much better feeling for it's accuracy and whether it works for your particular use case than any numbers. Lastly, note that we provide an ARConfidenceLevel for the scene depth buffer - the accuracy of individual depth values highly depends on this confidence level."