To enable authentication, you must create a zettel that stores [authentication data](00001010040200) for the owner.
Then you must reference this zettel within the [startup configuration](00001004010000#owner) under the key `owner`.
Once the startup configuration contains a valid [zettel identifier](00001006050000) under that key, authentication is enabled.

Please note that you must also set key `secret` of the [startup configuration](00001004010000#secret) to a random string (minimum length: 16 bytes) to secure the data exchanged with a client system.