Two Factor Authentication
Token2, MFA tokens OATH-TOTP SHA-1 SHA-256, Hardware token for Ubiquiti Account 2FA, TOKEN2 MFA Products and Services
How to set up the Two-Step Authorization (Google Authenticator). – Gaijin Support
A guide to common types of two-factor authentication
Use Security Keys with the Traditional Duo Prompt - Guide to Two-Factor Authentication · Duo Security
Types of two-factor authentication, pros and cons: SMS, authenticator apps, YubiKey
How do I set up the two-factor authentication (2FA) method?
Types of two-factor authentication, pros and cons: SMS, authenticator apps, YubiKey
Two-factor authentication explained: How to choose the right level of security for every account