Magic Cookie (Paperback)

High Quality Content by WIKIPEDIA articles! A magic cookie or just cookie for short, is a token or short packet of data passed between communicating programs, where the data is typically not meaningful to the recipient program. The contents are opaque and not usually interpreted until the recipient passes the cookie data back to the sender or perhaps another program at a later time. The cookie is often used like a ticket - to identify a particular event or transaction. The name "cookie" comes from a comparison to an unopened fortune cookie, because of the hidden information inside.