Mobile terminal and control method thereof

A mobile terminal comprising:

• a display;
• a camera capturing images;
• a database;
• a wireless communication unit communicating with a wireless communication module located in a store or a point-of-sale (POS) terminal in the store;
• and
• a controller configured to:
• receive a facial image of a user related to goods from the POS terminal when a payment is made between the mobile terminal and the POS terminal;
• receive a facial image of the user related to goods from the wireless communication module located in the store when the user of the mobile terminal leaves the store without purchasing the goods;
• analyze the facial image received from the POS terminal or the wireless communication module using a face analysis algorithm to obtain facial expression information corresponding to the facial image received from the POS terminal or the wireless communication module according to the analysis;
• generate goods information by associating the obtained facial expression information with other information related to the goods, and storing the goods information in the database;
• search for goods information stored in the database by analyzing a facial image of the user received via the camera based on the face analysis algorithm in order to extract facial expression information corresponding to the facial image of the user received via the camera and feeling information, the feeling information extracted based on the facial expression information corresponding to the facial image received via the camera;
• and
• cause the display to output the searched goods information stored in the database corresponding to at least the extracted facial expression information or feeling information,
• wherein the analyzing the facial image received via the camera comprises:
• causing the display to output an analysis result for the user to confirm whether the facial expression information corresponding to the facial image received via the camera corresponds to the analysis result when the analysis of the facial image received via the camera is complete;
• causing the display to output other feeling items according to the user's response with regard to confirmation;
• and
• matching a feeling corresponding to a feeling item selected by the user from the other feeling items to the facial expression information corresponding to the facial image received via the camera based on the facial image received via the camera.