TomaTito on 17 February 2016
After the Nintendo Account has gone live, Nintendo has opened the preregistration for Miitomo.
Just visit the page here, click Preregister and then create or log-in your Nintendo Account.
All users who preregister a Nintendo Account to Miitomo will automatically receive My Nintendo Platinum points.
Remember that both My Nintendo and Miitomo will be launching sometime next month.
