China's new spy tech can identify faces from space

Chinese scientists have developed an advanced imaging technology using synthetic aperture lidar to create high-resolution 3D images over long distances. During testing, it detected details as small as 1.7mm from 102km away, with 1.5cm accuracy. This technology surpasses current spy cameras and telescopes by 100 times, potentially allowing scrutiny of foreign satellites or facial details from low-Earth orbit. However, it requires stable atmospheric conditions and cannot track moving objects, limiting its current applications.