Systems and methods scan a previously printed sheet using a scanner to create an original scan, and evaluate the original scan to identify marks printed on the printed sheet. For example, any marks, such as the straight and curved marks located in separation areas (areas separating data areas of the printed sheet) of the printed sheet can be evaluated using a specialized image processor. Then, these systems and methods alter the pixels of such marks to add security features (e.g., microtext, microprinting, etc.) to the marks that identify the time, place, and user of the scanner, and this process produces an altered scan. Rather than outputting the original scan, these systems and methods instead substitute the altered scan in place of the original scan and, therefore, output the altered scan from the image processor in place of the original scan.