The Local File Camera Integration currently doesn’t allow unique identification of the created entity (via unique_id). This means the camera entities cannot be fully customised on the dashboards (eg excluded from the overview page).
If I add a unique_id field to my configuration yaml file, it reports: 'unique_id' is an invalid option for 'camera.local_file'
In my instance the file the Local File Camera points to updates regularly; unfortunately the ‘image entity’ seems behave very differently with caching (in the browser or android app); so keeps showing the old image even after the source file has been updated.
I haven’t been able to figure out a work-around, except use of the Local Camera Integration (which does not support the unique id option).