The device, which the Dolphins first began distributing at home games last season, contains a 4.3-inch display and provides 10 channels through which fans can individually select from a range of options, including audio programming and numerous television camera angles of the game, live updates and highlights of other games, fantasy team alerts, on-demand video, text-message boards, and concessionaires.
FORBES: NFL Experiments With Fan-Controlled In-Stadium Technology