Information processing system, device, method and program for processing information and remote controller terminal

An information processing system, an information processing device, an information processing method, an information processing program, and a remote controller terminal offer further improved operability. A remote controller terminal uses function item information receiving means to receive function item information representing functions of an information terminal device to be operated, which is directly transmitted from the information terminal device, and uses processing command transmitting means to directly transmit a processing command corresponding to the received function item information to the information terminal device in accordance with user's input operation, and the information processing device uses processing command receiving means to receive the processing command directly transmitted from the remote controller terminal, and uses control means to control the function corresponding to the processing command in order to execute predetermined processing in accordance with instructions from the remote controller terminal, thus the information terminal device 2 can be directly operated with the remote controller terminal 3, without having a wired connection.