Nintendo Accounts will 'ease transition' to Switch successor, says Doug Bowser

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PSA: When claiming your User ID for a Nintendo Account, you know you've done it correctly if you see this grey bar when you login. : r/NintendoSwitch

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Nintendo Accounts to 'Help Ease Transition' to the Switch Successor

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Nintendo Plans 'Smooth Transition' from Switch to Next Console by Using Players' Nintendo Accounts - IGN