It is possible to enable both the read-only mode of the Zettelstore __and__ authentication/authorization. Both modes are independent of each other. This gives four use cases: ; Not read-only, no authorization : Zettelstore runs on your local computer and you only work with it. ; Not read-only, with authorization : Zettelstore is accessed remotely. You need authentication to ensure that only valid users access your Zettelstore. ; With read-only, no authorization : Zettelstore presents its full content publicly to everyone. ; With read-only, with authorization : Nobody is allowed to change the content of the Zettelstore, and only specific zettel should be presented to the public.