You may want to know who the users of your site are, and you may want to customize the data for them. Chances are, that you will want to set up a login system that not only lets you know that the user is logged in, but lets you track some data on the user and possibly use a unique User ID to customize content. This article will show you how to do just that. In a nutshell, the tutorial shows you how to build a site login, authorization tools, and how to track your users with ColdFusion. Main topics include: Validating Entry and Storing Statistics, Storing Login Information on the Client, and Checking Login Information Page-By-Page.