[zach_hytre]

I have a sheep farm and would hate if someone were to kill my sheep, so to prevent this I put a dirt block in front of the entrance. Could it be possible that switches and buttons can only be hit if you have building rights in that realm, or maybe only the stone buttons can be activated by someone in the realm but wooden ones can be activated by anyone or vise versa?

[JonColmanator]

Or, you can do this using legitimate means like a combination lock. Or a hidden switch.

[dlgn]

[monkeychunks]

All you do is make it so you have to place a redstone torch there, which only realm members can do.