The company that makes the torches is Glow Motion. It's RF tech, but they're not super-specific about how it works. They do say it only requires one antenna, so

The company that makes the torches is Glow Motion. It's RF tech, but they're not super-specific about how it works. They do say it only requires one antenna, so it's doubtful they were triangulating the location of each device. http://www.glowmotiontechnologies.com/how-it-works http://www.glowmotiontechnologies.com/how-it-works It's the same company that did the illuminated kinetic beach balls in Drake's recent tour. Source: http://livedesignonline.com/super-bowl-li-2017-halftime-show/super-bowl-li-2017-halftime-show-photos http://livedesignonline.com/super-bowl-li-2017-halftime-show...