User Engine.NET Pro is a user signup and authentication system which allows you to create 'members only' area's on your website. User Engine.NET Pro can make use of a Microsoft Access 2000 database or SQL Server database to store registered user details and also logs date and time of user logins, as well as login counts. When a user signs up, all inputs provided are fully validated to protect against SQL injection, to keep your data & your site safe.The system is extensible and allows your web pages to be protected by inserting a single include line at the top, which will check if a user is logged in or not.User Engine.NET Pro features an administrator area where site statistics can be viewed such as the email addresses of registered users who subscribe to certain optins, from specific countries, who have or have not logged in recently can be queried..Further features are 'Remember Me' option using cookies to allow users to stay logged in until manually logging out, template based error pages to allow output pages generated during login & signup to be in the same style as your site and a forgotten password mailer.