Before revision:  We have demonstrated that generalised open-source mobile health monitoring platforms such as RADAR-base which leverages data from wearables and mobile technologies are valuable tools for helping understand the behavioural impact of public health interventions implemented in response to  infectious outbreaks such as COVID-19.
After revision:  We have demonstrated that generalised open-source mobile health monitoring platforms such as RADAR-base can be used to rapidly quantify and provide a holistic view of behavioural changes in response to infectious outbreaks such as COVID-19.