[funkaster]

just a warning: I just enabled it and it wasn't working with my account & google authenticator for android. I had to call customer support in order to disable the feature so I could login into my account again.

[sendob]

Would you mind sharing details ( process wise) of what they did to validate that it was a legitimate request from the account holder?

[matthewphiong]

Same here with Google Authenticator for iPhone.