Thinking of littering in Hong Kong? You could soon be a poster child for the problem.
A remarkable campaign from Ogilvy & Mather takes DNA from trash on the ground and uses Snapshot DNA phenotyping to generate physical likenesses of the litterers, who then end up on outdoor ads telling people not to litter. (DNA phenotyping is the process of predicting a person's physical appearance based on their DNA alone.)
The legalities of labeling people as litterers this way must be awfully complicated, and it's not entirely clear how close the images might be to the real people.