http://www.nintendo.com/3ds/nintendo-network-account

有了账号后可以做的：
1、eshop里下载demo和免费软件（以后无ID不能下了）


2、miiverse功能


3、跟wiiu用相同账号可以分享钱包余额





有了账号后不能做的：
1、一个3ds只能有一个账号


2、一个账号只能用在一个3ds上，除非搬家



简单说，就是3ds的账号以后会成为必须（eshop的demo和免费软件需要）
而且3ds有了账号除了增加miiverse功能和与同账号wiiu共享钱包外，和以前没有任何区别
不会存在多平台分享游戏或任地狱端保存用户资料，可以换平台下载游戏的情况

[ 本帖最后由 阿西达卡 于 2013-11-29 12:31 编辑 ]

同时这两天miiverse上也迎来了为3dsmiiverse做准备的一些更新


Hi everyone, it’s Tom at Nintendo.

You may have already found out that we made a change to Miiverse today.
We're getting ready for the Nintendo 3DS version of Miiverse coming in December, and this update prepares Miiverse so we can accommodate all the new 3DS users who will be joining us once the service begins.
To prepare for the large number of new users that we're anticipating, we worked on cleaning up a lot of things behind the doors, and made some changes on how Miiverse works on the outside.
When the 3DS version service begins, you'll notice newly created communities for 3DS games will show up right by the existing communities on Wii U.

Here are the key changes that were made to both Wii U and web versions with today's update:

1. We put a fresh coat of paint on the community list screen.
It now displays more communities, and on the Wii U version there's a filter button that shows the communities by their categories like before.
You can also press the "Favorite Communities" button on the top right of the screen to show a list of communities that you marked as your favorites.

2. Instead of showing the total number of Yeahs you received, the profile screen now show the total number of Yeahs you gave to others.
Like with the spirit of Thanksgiving, we made this change so everyone can focus on giving Yeahs to posts and users they like and respect.

The number of Yeahs will still be displayed on each individual posts, so good posts and drawings will still get a lot of Yeahs.
Beginning this Thanksgiving and beyond the holidays, I hope people can give Yeahs and be thankful to others.

3. We also changed the default display setting when you enter a community.
It now displays posts made by people who played the game first. You can always press the "All Posts" button to display posts from everyone.

The announcement that Miiverse will be coming to Nintendo 3DS was made in the Nintendo Direct last month, and everyone at Nintendo are excited and looking forward to the change.
If you already have a Nintendo Network ID, you can use that to log right in on your 3DS.
Please visit the official Nintendo website to find out more.

Happy Thanksgiving!

我觉得任地狱主要防的还是一次购买复数使用的情况，为了不稀释自己游戏价值——这可能是任地狱最不能忍受的
于是就顺便不承担保存客户资料风险不弄现在主流这种账户制度，既保全了软件价值也省了成本，于是就是玩具属性了

我记得所有权随账号走的这个系统最早来自网游，服务器端负责保存一切资料，玩家可以随便换客户端，但网游是付费的，所以保存资料其实是个付费服务
然后水果开始搞这个，账户内容可以分享平台，但水果是卖硬件的，这个服务就免费提供了，软件商也跟着以“吃亏”来扩大市场
虽然到现在这个系统成了主流，而且这是个讨好市场的系统，所有用户都很喜欢
但客观上这个系统对软件商来说是个霸王条款，凭啥你一份游戏的钱可以5个人玩，对软件商来说就少赚了4份，这个其实比二手还疼

回到任地狱，关键他既是卖硬件也是卖软件，而且是最守旧的中坚，可能是全世界最重视软件价值的软件商（fc的vc游戏还在卖5刀）
除了绝对要保证软件本身质量之外，还提供号称安心免费的网络服务，唯独不能接受多平台分享这个情况
现在数字销售也有了，账号关联也有了，但全是绕着多平台分享在打各种擦边球
因为现在的主机也不是必须联网的，所以除非有更好的办法避免这个，否则任地狱这个玩具属性是改变不了了