Simply put, the use of barcode tattoos in futuristic settings, particularly of the dystopian flavor. Maybe it's to mark them as being property of some Mega Corp or a Nebulous Evil Organization. Maybe they're clones, slaves, or prisoners. Maybe it just looks cool. Whatever it is, barcode tattoos are appearing more and more often in fiction. Most often these tattoos are on the nape of the neck, but they can be in other places, as the picture shows us. Examples of Scannable Man include: