LG Smart InstaView is a product that is equipped with a "multi-touch transparent LCD" and located on the upper right door of the refrigerator. The LCD screen provides various information such as weather, recipe, memo, food check, etc. and an intuitive operation is possible with its multi-touch and voice command functions. The "knock on" function, which allows the user to check the contents without opening the door, reduces the effort and frequency of door opening. Wi-Fi connection enables a connectivity among package products and between the product and mobile devices and thus turns the refrigerator into a central smart device of a home.