Real ID is a Battle.net account wide feature. If for any reason you want to activate Real ID on one World of Warcraft account but not another, please create a new email address and Battle.net account and contact our Billing department. Our Billing representatives may be able to move one of your World of Warcraft account to your newly created Battle.net account so that you may activate parental controls to disable Real ID without it affecting all accounts tied to your original Battle.net account.