You Can Set Up Your Nintendo Account User ID Before The Switch Comes Out

A NeoGaf user has reminded those who are  purchasing a Nintendo Switch that the Nintendo Account User ID will be your ID for the upcoming console, so you may want to secure yours now. All you need to do is log in to your Nintendo Account at accounts.nintendo.com and set your User ID in the User Information section of your account. You may have another done this when Nintendo Accounts launched with Miitomo back in March 2016. Better check just to make sure.