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 (910, 920, 930) 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 (910, 920, 930) 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 (910, 920, 930) 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 (910, 920, 930) 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 (910, 920, 930) 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 (910, 920, 930) 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.