How does it work? Typically it is a two-step process where a user must provide more than one type of proof that they are authorised before they can access an account. For example, you might need to provide a password as well as a second form of identification, like a code sent to a mobile phone that is registered with your account.
Mult-factor authentication makes it more difficult for someone else to sign into your email account. Even if someone finds your password, they would be stopped from getting into your account unless they have the second form of identity. This security feature is also available for other systems, for example, when banking online or accessing government services online such as myGov.
Where possible, we recommend you turn on multi-factor authentication for your accounts.