In a first data delivery apparatus, a user-input receiving unit receives data and a request for executing a workflow, a first data processing unit processes the data based on the workflow, a destination obtaining unit obtains a destination from the workflow, and a transferring unit transfers the data, the workflow, and a progress of the workflow to the destination. The present disclosure also is directed to an electronic authentication system including an electronic document authentication watermark seal or signature line for confirming a document’s signing within the view. The bus is coupled to an output converter and has a switch.