TWAINCommander with the optional PDF extension is a command line TWAIN
scan tools which allows scanning direct into PDF files. Also multipage
TIFF and JPEG are supported. TWAINCommander can be executed from the
prompt, from batch files, scripts or with a shell command from
applications. All relevant scan parameters can be controlled without user
interface by command line arguments.
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.