In the nation's pro football stadiums this weekend and all season long, the teams will be watching the fans while they are watching the game.
Since 2016, NFL and other pro sports teams, including more recently the Minnesota Vikings, have been using photos taken at regular intervals during games to take a step closer to one of the most elusive goals in business of any type — knowing the customer.
They've been aided by a company called CrowdIQ, which applies computer analysis to the photos. Initially, it helped gauge the age and gender of people at a game, which some teams formerly had their marketing interns do.
With time, CrowdIQ's analysis grew more detailed. It now helps teams determine when fans arrive, how many watch a halftime show, how many support opposing teams and whether marketing promotions during games are having an effect.
"Anything you and I can deduce from an image, a computer can be trained to do," said Rachel Goodger, the Minneapolis-based chief revenue officer for CrowdIQ.
"It isn't an exact science, but it's giving these teams a better understanding of what their crowd looks like," she said.
Meaghan Fors, innovation strategy manager for the Vikings, said the data portrays the stadium crowd as a living organism. "It can say this percentage of people is looking at their phones, or this percentage of people is looking at [something else]," Fors said. "It's not down to an individual level by any means."
For the Vikings and other NFL teams, CrowdIQ in its earliest days confirmed something that teams have long suspected — that fans tend to miss most of the action on the field. In the most critical plays, only about 40% of fans see the actual snap. On routine plays, even fewer do.