A medical diagnostic system and method having an application configured to generate a user-interface screen comprising a plurality of interface items. A configuration file is stored on the system and includes identification data of the items and a guarded designation for at least one guarded item. A dynamic link library is configured to receive the identification data and the guarded designation from the configuration file, and a server operative on the system for serving the user-interface screen to a remote client. The guarded item of the user-interface screen served to the remote client may have an altered appearance to the remote client and/or may be inoperable to the remote client.