React Native is the best option if are going to develop mobile applications. Other than being easy to use, the apps are faster. Retaining the app is easy with faster load time.

Great idea, but in reality, this will not happen. if you code it to automatically close the door once opened then in the code you have to specify how much time delay should be there once opened, other the once opened and if it takes time to take out the product then every time the buzzer will sound that will irritate the user.