We have projects in Jira that are configured to let the Anyone group browse the project. Those people can view the issue details just fine without logging in, but if they try to view the same issue on a Rapid Board, they are prompted to log in. I was looking at GHS-1374 which made me think this would be possible since in that case people were asking for permissions to be different in GH whereas I'm expecting them to be the same.
My reason for doing this is because I have about 20 developers working on internal corporate applications that have access to create/modify issues, but I want other people in our company to be able to see where their request (issue) ranks and therefore get an idea how long before they can expect to see something done on it.