At present we have the facility to Manage Apps (via Settings > Privacy and Security), which gives us a breakdown of the various companies we have allowed open banking access to our Monzo banking data.
I know that (for now at least) we can only access Monzo via one iOS and one Android device at any given time, but it would be useful to have a view of the currently connected device/s, as well as detail any historical accesses by other devices, hence a new Manage Devices menu item. This could also include the web interface.
I think this would be very useful, especially for helping people who have had fraudulent activity on their account, or should Monzo ever remove the restriction on multiple logins (so make managing all those places we’re logged in more simple).