The claimed subject matter provides a system andor a method that extends transactional guarantees to unstructured data in a file system. A management application executing on the server may provide a graphical user interface allowing for the selection and arrangement of the network devices andor physical layer devices into a use case. The branches can each include one or several stimulation contacts that can deliver an electrical current to tissue contacting the stimulation contacts. The slot is positioned over the materials and under the OTG probe head such that a cavity is formed. The message and other entered information is authenticated and validated.