The point of these technologies is to stop the low hanging fruit and trace the source of ransom notes, leaked documents, and the like. For counterfeiting, a te

The point of these technologies is to stop the low hanging fruit and trace the source of ransom notes, leaked documents, and the like. For counterfeiting, a technical person's first thought is: "how does the Bureau of Engraving and Printing actually do it?" and then they do that - and you nailed it: offset printing. Laser printers and inkjets can't even remotely compare.