Cookie · WebGlossary.info · Uncover Your Unknowns in Web Development

A small piece of data sent from a website and stored on a user’s computer by the user’s web browser while the user is browsing. Cookies were designed to be a reliable mechanism for websites to remember stateful information or to record the user’s browsing activity. They can also be used to remember arbitrary pieces of information that the user previously entered. Cookies perform essential functions in the modern Web. Perhaps most importantly, authentication cookies are the most common method used by web servers to know whether a user is logged in or not, and which account they are logged in with. ← Wikipedia