New webpage published by Apple today detailing the new two-factor authentication that will be directly built into iOS 9 and El Capitan. Most notably, Apple is using six-digit verification codes and passcodes by default, and the feature will be rolled out alongside the public betas of iOS 9 and El Capitan. “During the iOS 9 and OS X El Capitan public betas, enrollment in two-factor authentication will be limited”, according to Apple.