1. A method for using void pantographs, the method comprising: generating a test sheet including multiple void pantographs, each of the multiple void pantographs including a pantograph foreground and a pantograph background; printing the test sheet; identifying from the printed test sheet at least one of the multiple void pantographs having a covert or semi-covert pantograph foreground and background; scanning the printed test sheet; identifying from the scanned test sheet at least one of the multiple void pantographs having an overt pantograph foreground; and developing a workflow for the at least one of the multiple void pantographs having both i) the covert or semi-covert pantograph foreground and background after printing, and ii) the overt pantograph foreground after scanning.