Call of Duty: Warzone Adds 2FA

Infinity Ward Tweets that they've added two-factor authentication to Call of Duty: Warzone. They say this offers an additional layer of security for PC users. Presumably this will help impede banned players from making new accounts to prevent battle royale with cheese:
Security Update: We have initiated two-step SMS authentication for new #Warzone PC users, who log in as free to play as another step to provide an additional layer of security for players.