Laboratory apparatus (1; 400; 500) for the apparatus-controlled treatment of at least one laboratory sample, comprising: - at least one treatment device (3; 403; 503) for carrying out the treatment of the at least one laboratory sample, and - an access control for the laboratory device; - a housing (12; 401; 501) in which the at least one treatment device and the access control are arranged; wherein the access control comprises: - a first interface device and a second interface device ; and - a control device ; wherein the control device is arranged and programmed to: a) establishing, via the first interface device , a plurality of first data connections for data exchange with a data processing unit of one or more user interface device (5; 7; 404; 504); b) establishing a second data connection for data exchange with a data processing unit of the laboratory instrument via the second interface device ; and c) controlling authorizations and/or access rights for user access to laboratory instrument functions via the first and second data connections; wherein the control device is arranged and programmed to register a first user requesting for a first session at the laboratory apparatus via the first data connection and via the first interface device and to assign authorizations and/or access rights to the user, and the control device is set up and programmed to control, during this first session, the at least one request of at least one further user to the access control, which request is made via a further first data connection and via the first interface device and is directed to the login, by a login process of the at least one further user, and to start a session for this further user which takes place at least temporarily in parallel with the first session of the first user. - at least one treatment device (3; 403; 503) for carrying out the treatment of the at least one laboratory sample, and - an access control for the laboratory device; - a housing (12; 401; 501) in which the at least one treatment device and the access control are arranged; - a first interface device and a second interface device ; and - a control device ; wherein the control device is arranged and programmed to: a) establishing, via the first interface device , a plurality of first data connections for data exchange with a data processing unit of one or more user interface device (5; 7; 404; 504); b) establishing a second data connection for data exchange with a data processing unit of the laboratory instrument via the second interface device ; and c) controlling authorizations and/or access rights for user access to laboratory instrument functions via the first and second data connections; a) establishing, via the first interface device , a plurality of first data connections for data exchange with a data processing unit of one or more user interface device (5; 7; 404; 504); b) establishing a second data connection for data exchange with a data processing unit of the laboratory instrument via the second interface device ; and c) controlling authorizations and/or access rights for user access to laboratory instrument functions via the first and second data connections; wherein the control device is arranged and programmed to register a first user requesting for a first session at the laboratory apparatus via the first data connection and via the first interface device and to assign authorizations and/or access rights to the user, and the control device is set up and programmed to control, during this first session, the at least one request of at least one further user to the access control, which request is made via a further first data connection and via the first interface device and is directed to the login, by a login process of the at least one further user, and to start a session for this further user which takes place at least temporarily in parallel with the first session of the first user. <EOS>