Camera Remote via WiFi

So I’ve got a project i need some help with for my girlfriend. End goal is a small hand held device with a screen and a capture button to control a canon 80D over WiFi with live view. Main question is can I code/configure the hand held to act as a dedicated program that only opens into the camera controls and takes a photo then the capture button is pressed. Ease of use and reliability are top priority due to this being for her work.