Abstract: An IMS includes a terminal and an Internet Protocol Multimedia Subsystem (IMS) server, and may perform a method for transmitting and receiving presence information via the IMS core unit, a registering unit, a presence information transmitting unit, a friend list unit and a presence information control unit. The IMS core unit processes an IMS protocol. The registering unit registers terminal information to the IMS server. The presence information transmitting unit transmits presence information to the IMS server. The friend list unit manages a friend list of the various terminals. The presence information control unit designates at least one friend in the friend list and requests presence information of the designated friend.

Abstract: A first device classifies and displays an item, identifies a suitable class matched to approach information of a second device out of the entire area of the classified item as the second device approaches the first device, and provides the second device with the identified class or executes a service linked to the class. The second device approaches a portion where a desired class is displayed by the first device, receives the class from the first device, and provides a linked service using the same.