Developers using the Twitter API with basic authentication have three more weeks to switch to OAuth. The change has been the preferred method for some time, as users do not need to share their passwords with developer applications.
A cornerstone feature of any Web application is the login page. This article take you step by step through the process of adding phone number powered second factor authentication (2FA) to a Web application by taking advantage of Nexmo's Verify API. This tutorial requires knowledge of PHP.