The fourth theme for Rapid Prototype Design is Chindogu, useless inventions with a usage.
My idea for this theme is an app, the awake test. The user opens the app to check they’re awake, they press a button and it tells them they’re awake.
https://xd.adobe.com/view/15f71e7a-442f-4342-9fd4-656f0d877663-40a4/?fullscreen&hints=off