1 Introduction
The amount of time users spend engaged with digital devices is driving researchers to investigate the impacts of digital behaviour on wellbeing [1]. Recent research has started to paint a complicated relationship. On the one hand, some show how digital technologies or tools can boost positive mood [2], for example, sharing photos by elderly [3] and playing computer games at work [4]. Or a study that found that watching YouTube videos generally reduces stress and induces positive affect within an experimental study design with 200 full-time workers [5]. However, other digital technology usage, such as passive engagement with Facebook, can have an association with higher stress at certain times [6], e.g., while studying [7]. Further, email use frequency also has a positive correlation with higher stress rating [8].