Apple has added  two factor authentication for iMessage and FaceTime. Previously, users that had two-factor enabled could log in to iMessage or FaceTime without requiring the time sensitive codes that should be required.
The security feature adds an extra layer of protection against hackers trying to access users’ accounts. After logging in with their usual name and password, two-factor asks account holders to use a second security code to verify their messaging and video chat accounts.
The login protection was added to Apple’s iTunes and iCloud accounts in March 2013, meaning Apple users who have perviously logged into a Mac, iPhone or iPad with their Apple ID were already protected by the extra security.
Now the same service has been activated for two more of Apple’s services, meaning that if users log out of their FaceTime or iMessage accounts and attempt to log in again, or log in on another machine, they will require a security code to confirm their username and password.
Apple’s two-step implementation uses codes sent via text message to a registered phone or the company’s Find My iPhone app. More than one phone number can also be associated to the account just in case one of them is lost or stolen.
A recovery key that is intended to be kept safe for emergencies can also be used to log into the account in place of a security code.