cookie


 * HTTP cookies**, sometimes known as **web cookies** or just **cookies**, are parcels of text sent by a server to a web browser and then sent back unchanged by the browser each time it accesses that server. HTTPcookies are used for authenticating tracking, and maintaining specific information about users, such as site preferences and the contents of their electronic shooping cart. The term "cookie" is derived from "magic cookie" a well-known concept in Unix computing which inspired both the idea and the name of HTTP cookies. definition from Wikipedia.com