Sometimes called a 3D laser scanner, LiDAR is a surveying method that measures the distance to a target by illuminating the target with pulsed laser light and measuring the reflected pulses with a sensor. It has terrestrial, airborne, and mobile applications. Some models of 3D LiDAR can generate up to 700,000 data points per second. There are plenty of exceptional producers on the market, for example, Quanergy® and Velodyne®.