The Nintendo Account has launched in Japan. This new system will work as a cross-platform connection between consoles, PCs, and mobile devices, allowing data transfer between games these various devices through a cloud-based data service.

The online registration site went live overnight (North American time) and allows for full viewing of the purchase history, quick purchase of eShop titles including 3rd party ones, and offers a cashback promotion as well. Until February 1. each 1000 yen added to an eShop balance will get 100 yen back.

Nintendo has also opened an official Japanese language blog called "Nintendo Topics" at the same time. No word on when either of these features will migrate to other territories, nor when the My Nintendo rewards program will go live.

UPDATE 9:30 p.m. Eastern: In a statement to Australian Nintendo reporters Vooks, Nintendo of Australia has indicated that the account went live in Japan in order to facilitate off-device purchases there, and more functionality is to come. The service will launch in Australia in March, which is likely to be the full international rollout.

UPDATE 4:00 p.m. Eastern: Users can sign up using their Nintendo Network ID or through Facebook, Twitter, Google Plus, and email accounts. The account will include gaming info, freebies for any games you own, a friend list manageable from any device, and there is hints at special gifts like birthday discounts as well. Nintendo also has plans to expand the account service to include external benefits at places like theme parks and stores.

Nintendo will also launch a new rewards program in Japan, called My Nintendo, though no date has been announced. The Nintendo Account website teases that not only will game purchases accumulate points, but playing games will too. Prizes will include special merchandise and discounts. The previous reward program, Club Nintendo, was discontinued globally earlier this year.