sessiontracking

How do banks remember "your computer"?

As many of you probably know, online banks nowadays have a security system whereby you are asked some personal questions before you even enter your password. Once you have answered them, you can choose for the bank to "remember this computer" so that in the future you can login by only entering your password. How does the "remember thi...

HTTP Session Tracking

Since HTTP is a stateless protocol, when a client makes a number of requests to the server, how does the server uniquely identify a particular client's requests over a period of time say t1, t2, t3.. I browsed the web and came across terms like session id, URL rewriting and cookies. But it would be great if someone explains it in a bett...