This, however, would not produce accurate results, according to experts.
“The problem with crowd scanning is we know temperature measurements are impacted by the distance from camera to target, and crowds are different distances away,” said Chris Bainter, the director of global business development for FLIR, a maker of infrared technology. “The cameras don’t focus from three feet or six feet away to infinite with everything in focus.”
“Where you measure has a big impact, and studies have shown the tear duct is the best place,” he added. “If you are looking at a crowd of people, are you getting an accurate reading?”
The real version of this technology goes something like this. One camera, one subject. Here’s my wife on our stoop.
Article source: https://www.nytimes.com/2020/07/02/technology/coronavirus-infrared-cameras-temperature-sensors.html