The US Special Operations Command is developing a portable face-recognition system designed to identify people 1 kilometre away. It could also be used by law enforcement
Source:
https://www.newscientist.com/article/2233639-us-military-face-recognition-system-could-work-from-1-kilometre-away/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home