A user terminal apparatus , comprising: a storage for storing mapping information for mapping at least one device in a predetermined service space on a corresponding image; a camera ; a display ; and a processor configured to: display a first photographed image captured by the camera on the display , the first photographed image including the at least one device , sense a type of a device included in the first photographed image and broadcast a response request signal regarding a device corresponding to the sensed device type in the predetermined space, display a list of devices which transmit a response signal based on the response request signal being received from the at least one device , generate and store mapping information in the storage , wherein an image of a device included in the first photographed image and a device selected from the displayed list are mapped in the storage based on a user command, and identify in a second photographed image captured by the camera a device from the at least one device based on the stored mapping information, and, based on receiving a user command related to the identified device , display information on the second photographed image. a storage for storing mapping information for mapping at least one device in a predetermined service space on a corresponding image; a camera ; a display ; and a processor configured to: display a first photographed image captured by the camera on the display , the first photographed image including the at least one device , sense a type of a device included in the first photographed image and broadcast a response request signal regarding a device corresponding to the sensed device type in the predetermined space, display a list of devices which transmit a response signal based on the response request signal being received from the at least one device , generate and store mapping information in the storage , wherein an image of a device included in the first photographed image and a device selected from the displayed list are mapped in the storage based on a user command, and identify in a second photographed image captured by the camera a device from the at least one device based on the stored mapping information, and, based on receiving a user command related to the identified device , display information on the second photographed image. display a first photographed image captured by the camera on the display , the first photographed image including the at least one device , sense a type of a device included in the first photographed image and broadcast a response request signal regarding a device corresponding to the sensed device type in the predetermined space, display a list of devices which transmit a response signal based on the response request signal being received from the at least one device , generate and store mapping information in the storage , wherein an image of a device included in the first photographed image and a device selected from the displayed list are mapped in the storage based on a user command, and identify in a second photographed image captured by the camera a device from the at least one device based on the stored mapping information, and, based on receiving a user command related to the identified device , display information on the second photographed image. <EOS>