Source: https://www.rense.com/general93/crowdg.htm
You used to be able to get lost in the crowd, but not anymore. Double click on any area in the picture to bring the person closer. Or, just click the mouse and use the mouse wheel to bring them closer.
https://gigapan.org/viewGigapanFullscreen.php?auth=033ef14483ee899496648c2b4b06233c
This is a photograph of 2009 Obama Inauguration. You can see IN FOCUS the face of EACH individual in the crowd !!!
You can scan and zoom to any section of the crowd. . . wait a few seconds.
Double click anywhere and double click again and perhaps again. The focus adjusts to give you a very identifiable close up.
The picture was taken with a robotic 1474 megapixel camera (295 times the standard 5 megapixel camera).
Every one attending could be scanned after the event, should something have gone wrong during it.