We have created WCM enabled site by integrating webcenter portal and content.
In our case guest user has guest access by default. So on giving CTRL+SHIFT+C, the gues user is able to view the contribution console dotted line without any option for edit access. Functionality wise, it is fine, but is there any way out to disable this keypad buttons for guest users alone.
You can disable it for all users in adf-config.xml, see support note: How To Disable Contribution Mode In WebCenter Portal [ID 1517509.1]
A workaround to only hide it for anonymous users would probably be to customize the Content Presenter task flow and add some extra securityContext.authenticated EL to the parts that render the dotted blue line and button bar.