![]() ![]() ![]() This too is confusing to the end user, as shown in the following screenshot. Problem Two ( Ambiguous UI message): If you implement logout functionality through the same flow, the prompt still says Sign In, even though the user may have already clicked a Logout button. Problem One ( Where did this prompt come from? ) : Many people consider this a bad user experience because the prompt looks out of place, and the wording is confusing and might alarm end users. There are a couple of problems with this prompt: The interface prompt informs you that a specific app, the Yelp app in this example, wants to use a specific website to sign you in, and it warns you about information sharing. The following screenshot came from an iOS app preparing to log you in with Facebook. However, in 2017, a new prompt appeared in the login flow, before you were taken to the website. The use of a web browser for auth in this example is considered a “Best Current Practice” for security and usability reasons. This familiar Single Sign-On (SSO) pattern is frequently referred to as the redirect flow for authentication. Once verified, the website then redirects back to the app, and you are logged in. On an iPhone, when we log in to an app, we click a login button, and a website pops up to verify our credentials. ![]()
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