I know about browscap, and how to get some of the browser information, but I want to know if there is any way to get a user's e-mail address just from being connected to your web site. If there is not any "generic" or built-in function that can do this, is there a software package that might work? I'd much rather a built-in function, but I'll give points to anyone who can direct me to a software package (just as long as it is a very good package).
I know that I could have a user type in there information to logon to the page (or a certain part of it), but I want the ability to pull it up immediately without any prompts. Reason being, just to build rapport, e.g. User John Doe connects to your web site, and immediately he gets a nice warm welcome message saying something like, "Welcome back John. We missed you." I'm sure that I could do this with cookies, but I'm not sure that's the way I wanna do it. Is there any other way around this? Please give me some ideas people. You'll get the points if you can satisfy the question in the first paragraph (above) or give me an even better way to do this. Thanks!
Oh, and we're using IIS4 on NT 4.0 just in case you need to know.