This picture was taken with a camera 70,000 x 30,000 pixels (2100 MegaPixels).
It can identify a face in a multitude.
The cameras are not sold to the public and are being installed in strategic locations. (This one is in Canada)
Place the cursor in the multitude of people and left double click a couple times. It will continue to show the people much closer, when you double left click again or click more if needed. Amazing!!
There were thousands of persons and yet one can spot and recognize any face…..both police and Army have it.