What's all the info Blizzard need when changing email over the phone?

Hi guys,





I was just wondering whats all the info Blizzard ask for when you call up and ask for them to change your email address for you?





I know obviously first name and last name, and the secret answer.





Do they ask for your physical address and phone number?





Thanks guys.|||probably most places do as added security|||For just changing the email, you only the names and secret answer.