A child account has the following characteristics:

• An email address cannot be registered to a child account. As such, any notifications sent via email are sent to the email address registered with the parent or guardian's Nintendo Account that manages the child account. Benefits that are given to Nintendo Account users based on whether they have an active opt-in to promotional emails cannot be granted to child accounts
• Child accounts can only be created for users aged 17 and under
• Some My Nintendo missions cannot be completed by users with child accounts
• Social media accounts can not be linked to child accounts

Other than these points, child accounts function almost identically to any other Nintendo Accounts.