I’ve created a dashboard that I want to make public for a narrow set of users. It’s possible to access the dashboard without logging in to EmonCMS using its id, like: http://emon/emoncms/dashboard/view?id=4
This is slightly easier to set up as you do not need to set all the feeds and dashboard to public and you also have marginally better control over who accesses it as nothing is public.
However I have raised an issue on GitHub as IMO it should also work on public dashboards without an apikey.