When using Link123 ( Camera and Smart device are connected by wifi ) can offer you those easy funtions for better life . Functions: 1. Remote control : control the camera form smart device 1-1: Romote shutter - Taking photos Adjusting camera settings 1-2 : Camera Link- Viewing camera photos and movies on smart device Storing photos and movies form camera to smart device . 2. Download GPS data to geotag photos stored in camera 3. Select photo and movies and save them into smart device ,