Two-factor authentication (2FA) is an extra layer of protection beyond a single password. The extra protection can be knowledge (something you know), possession (something you have), or biometrics (something you are). Using a second authentication factor, such as a mobile phone (something you have), provides additional protection against common security threats such as account takeover, fraud, data loss, malicious code, and phishing attacks.
By using the Salesforce Authenticator app, Account Manager uses the possession metric as the secondary form of authentication. Push notifications and verification codes for 2FA are supported.