Twitter today updated its iOS app to version 5.9, adding an improved login verification feature that works with Twitter’s two-factor authentication procedure (which debuted earlier this year), replacing the phone number portion with in-app alerts. With login verification enabled in the Settings menu, Twitter users will get a push notification on their phones alerting them of any login attempts, which can then be approved. Login verification includes international support and provides details on location and browser for anyone who accesses a Twitter account with the setting turned on. The app also provides backup codes in case a phone is lost. In addition to new security features, the update brings user photo galleries, new opt
