They have watch lists of people banned from the stadium.It has been used years ago for hooligans in European soccer stadiums. Demographic info like age and gend

They have watch lists of people banned from the stadium.It has been used years ago for hooligans in European soccer stadiums. Demographic info like age and gender can be used. Checking if season seat holders are actually there is something I hadn't heard of, though with the high value of scalped tickets for the Rangers and Knicks, it isn't surprising.