On September 22nd, 2017, Nintendo created an app authentication program for online Nintendo accounts.

This Two-Factor Authorization is a security measure that makes it difficult for other people to access your account.

EditHow to Enable Two-Factor Authorization

To enable this new security feature, head to Nintendo’s login web portal here, then go to the Sign-in and Security page.

Note that if you have not already, you will need to verify an e-mail address before you an enable the Two-Factor Authorization. An email will send you a verification code to continue.

When you have it enabled. There will now be a requirement that every new log in for your Nintendo account requires an additional authorization besides the login and password. You will be asked to download a Google Authenticator App on your smart device, and scan the QR Code (or input a key). Finally, the app will give you a 6-digit code that you then enter to confirm the authorization.

From then on, you will use the app in conjunction with signing in – which will prevent others from accessing your Nintendo Account without your knowledge. Once you have provided your email and password, you will be asked to provide a code now found in your Google Authenticator app – and this code will change constantly.

Note: After first setting up your authentication, you will be given a list of backup codes in case you are unable to access your app for any reason – copy these codes to a safe place!