Which of the following is not considered a valid factor for multi-factor authentication?

Which of the following is not considered a valid factor for multi-factor authentication?

• Something you are
• Something you know
• Something you have
• Something you do 

EXPLANATION

Types of authentication factors

When it comes to MFA, we typically refer to three types of authentication factors:

• Something you know (knowledge), such as a password or PIN
• Something you have (possession), such as a badge or smartphone
• Something you are (inheritance), indicated through bio metrics, like fingerprints or voice recognition