The Nintendo Network now allows for two-factor authentication for all accounts.
To enable, simple head to the Nintendo Network portal and then to Sign-in and security settings. At the bottom of that section is the option to enable two-factor authentication.
As with Microsoft’s two-factor authentication, an app like the Google Authenticator (iOS, Android) can then be used to synchronise with account. It provides an ever-changing, six-digit passcode that must be entered alongside your username and password when next logging in.
Will you enable two-factor authentication on your Nintendo Network account? Why or why not?