A Soccer Team In Denmark Is Using Facial Recognition To Stop Unruly Fans

On a cold, sunny October day on the outskirts of Copenhagen, Denmark, a group of men dressed in black gathers outside Brondby Stadium to shoot off a couple of rockets, raise their fists and shout about how the home team will soon beat -- and beat up -- the visiting archnemesis, FC Copenhagen. Police are out in force, riot helmets at the ready. Brondby-Copenhagen matches have a history of leading to vandalism, arrests and general mayhem. An attempted photo of the group gets a gloved hand in the face. "You need to stop," says the hand's black-clad owner, before he disappears back into the crowd.