Snapchat has added an optional two-factor authentication feature to its latest version of its app. The feature, called Login Verification, is a one-time SMS password sent to a mobile device that when used in conjunction with a user s password beefs up authentication. Apple’s iOS 9 will require six-digit passcodes and introduce 2FA in its next version of the mobile operating system. Users with multiple devices can also use the service to verify additional phones or tablets, for example.
Source: https://threatpost.com/snapchat-offers-users-optional-two-factor-authentication/113288/