It's interesting to see the concept expressed by the use of simple image. The barcode is visualized as the window of prison, which show the concept of social issue.
these minimalist posters convey a sense of order and direction and also not too obtrusive so being quite reserved.
Love this design technique
A summer inspired series of digital collages.
Sherlock Holmes Poster by Olly Moss
Typographical Flyer Designs to Skyrocket Your Creativity http://www.webdesign.org/typographical-flyer-designs-to-skyrocket-your-creativity.22349.html
Femalt, Female Artist Festival / by Dough Rodas, via Behance