A method, a system, a User Equipment (UE) and an application platform for
exchanging application information between a presence entity and a
watcher, wherein the presence entity publishes application information or
commands destined to a certain application, in the form of a presence
tuple. The watcher subscribes to presence information associated with the
certain application, and once authorized, receives the tuple with the
application information or command. An UE or an application platform run
several applications, and comprise a SUBSCRIBE Dispatcher module and a
PUBLISH Handler module for sending presence SUBSCRIBE messages and
presence PUBLISH messages for requesting or providing the application
information and commands.