Multifactor authentication (MFA) is an authentication method that requires from users two (as in 2-factor authentication) or more information that fall under either of these four categories: knowledge (e.g., PIN), possession (token, USB key, etc.), inherence (biometrics—e.g., fingerprint, voice, etc.), and location (determined through GPS tracking). Options to increase the number of factors required to authenticate identity makes multifactor authentication a logical core value for the zero trust model.