Pre-registration has begun for the first Nintendo mobile app, Miitomo, made for the masses to network socially. As this is Nintendo's first "smart device app", they've got a lot riding on its success. As such, they're making a big deal of how and when it'll launch. Starting today, Miitomo will allow pre-registration. In this pre-registration, users will attain Platinum Points for a new My Nintendo rewards program, one which will launch alongside Miitomo in March.