Apple steps up security with native two-factor and 6-digit passcodes in iOS 9
Nestled in the middle of iOS 9 announcements were two security-related bumps: Apple now suggests you sete a six-digit passcode instead of a four-digit one; and two-factor authentication becomes a built-in part of iOS (and OS X) rather than an afterthought.
Glenn Fleishman | 10 Jun | Read more