Chapter 3. User Authentication
Introduction
When web applications enable one-to-one interaction and store user-specific information, they require users to create an account (REGISTRATION) and choose unique credentials to access the web applications. Registering may require users to enter a set of alphanumeric characters from a distorted image to prevent spam and ensure that registering users are human and not automated computer programs (CAPTCHA, Completely Automated Public Turing test to tell Computers and Humans Apart).
Once unique credentials are established, users can identify themselves (LOG IN) and store and access their personal information. After logging in and accomplishing desired tasks, users often need a way to exit the application to ...
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