A new way to prevent cheating at live esports tournaments

Whenever a Counter-Strike pro lines up a nearly unbelievable headshot or manages to kill an opponent covered by a visually impenetrable wall or smoke screen, swarms of viewers on Twitch inundate the chat with the acronym "VAC," accusing that player of violating Valve's Anti-Cheat System.
Extra anti-cheating software exists for online CS:GO tournaments, but offline LAN events haven't always had the same level of protection against cheats and hacks that could potentially give competing players an