What if you could use your personal data to track your mental wellbeing? Could behaviours like spending and physical activity hold vital insights into our mood? And what would an app need to do in order to gain acceptance and use by consumers?

Those are some of the questions which the Mental Wellbeing Sandbox has been set up to explore.

In this episode of the DataIQ Podcast, I talk to Liz Brandt, chief executive of its architect, Ctrl-Shift, together with Gregor Henderson of Public Health England, Phil Fearnley, formerly of HSBC, and Henry Jones of mental health services provider Togetherall about their participation in the sandbox and what they have learnt from it.