A document processing system includes an input receptacle for receiving documents. A transport mechanism receives the documents from the input receptacle and transports the documents past an image scanner and a discrimination unit. An output receptacle receives the documents from the transport mechanism after being transported past the full image scanner and the discrimination unit. The image scanner operates to obtain images of the documents and further operates to obtain images of selected portions of the documents, and further can obtain information contained in the selected portions. The discrimination unit operates to determine document authenticity. A system controller directs the flow of documents over the transport mechanism.