Although not explicitly described in the film, MNU staff used basic cardboard stencils such as this to spray paint permanent tags on the aliens during processing of their arrival on Earth.
Included with the Art Of District 9 book from Weta Workshop, this perforated cardstock piece is signed by District 9 designers Greg Broadmore, David Meng, Leri Greer and Christian Pearce, as well as by book author Daniel Falconer.
