Multi-factor authentication (MFA) is required for administrators in the organization's key data systems.
For example, when first logging in with a password, a one-time identification code can also be sent to the user as a text message. In this case, he has been identified by two factors (knowing the password and ownership of the phone).
Biometric identifiers (e.g. fingerprints) and other devices can also be used for multi-stage authentication. However, it is worth considering the costs and implications for privacy.