Here’s the tech behind the Carolina Panthers’ giant AR cat

This past weekend marked the first Sunday of the 2021 NFL season, and while it was full of exciting highlights, one may have towered over them all: the Carolina Panthers' viral video of a giant virtual panther leaping around Bank of America Stadium.
The video is ridiculous. A big virtual cat jumps into the stadium, paces around the field, shreds a New York Jets flag (the Panthers' Sunday opponents), and hops away with a menacing roar. It's proved to be hugely popular, with 5.6 million views on Twitter.
Check out our new mixed-reality panther that debuted today pic.twitter.com/8DwEvam9KM
- Carolina Panthers (@Panthers) September 12, 2021
While the Panthers' tweet calls the mascot a mixed-reality panther," it actually seems...