Cookie is a technique that allows application producers to trace the status of client application or store some runtime data or information on the client side.
Cookies are implemented as standard HTTP cookies. They are sent in the request header. After receiving a cookie the iPhone iPFaces application will store it either to memory or to permanent memory for a specified time. The cookie will be deleted after the specified time. If the cookie is stored just to the memory and the application is terminated and started again, such cookie is no longer present.
IPhone implementation of the cookies in the HTTP client API used in the iPFaces client does not allow changes to this behavior from server side.