Emotional interaction is about considering what makes us happy, sad, annoyed, anxious, frustrated, motivated, delirious and so on and translating this knowledge into different aspects of the user experience, from when we first want something to when we no longer interact with it or need to replace it. However, it is not straightforward to achieve as people’s moods and feelings are constantly changing. There are also many reasons that might cause someone to be happy or sad, such as the sun shining or someone else winning a game.