2FA (Two-factor authentication) provides your SEON account with additional security.
The 2FA is used to provide your SEON account with an additional security layer when signing in, with an application on your phone (such as the Google or Microsoft Authenticator) that provides a one time access code.
If you enable this setting, all users will be signed out of the system and the next time they log in, they will have to set the 2FA up before being able to access the Admin Panel again.