2FA is the firewall for your identity.
Two-factor authentication technology is defined as 2 separate authentication layers that the institution user must present to verify access to your systems. 2FA technology is defined as below in the best practices in Cyber Security terminology.
- What the user knows (something you know) (password, pin, etc.)
- User owned (something you have) (phone, token, etc.) or User owned (something you are) (retina, fingerprint, etc.)