A method of processing documents includes receiving a stack of documents including currency bills and substitute currency media. Each substitute currency medium has at least one barcode. The method further includes transporting the stack of documents via a transport mechanism, one document at a time, along a transport path and denominating with a currency detector each of the currency bills in the stack of documents. The currency detector is positioned adjacent to the transport path. The method further includes scanning with a barcode scanner a barcode on each substitute currency medium in the stack of documents. The barcode scanner is positioned adjacent to the transport path. The method further includes imaging with an image scanner each substitute currency medium in the stack of documents to generate a raw image file of the substitute currency medium. The image scanner is positioned adjacent to the transport path.