An HTTP cookie is a small piece of data sent from a website and stored on the user’s computer by the user’s web browser while the user is browsing. Cookies are designed to remember and record the user’s browsing activity. A cookie will typically contain the name of the domain from which the cookie has come, the “lifetime” of the cookie, its value and a randomly generated unique number.
If the user does not want his date to be stored he might disable the cookies by changing its settings on the browser. Please note that if you do not allow sites to save cookies, many sites will not work. In order to change your cookies settings choose your web browser and follow the instructions: