In fact, this scientific paper clearly states that reading more than the abstract of a scientific paper is highly correlated with unhappiness.

Based on various studies, it is recommended to only read the title of anything (be it a scientific paper, a blog post, or the label on a cereal box) and use imagination to fill it with comforting meanings.

Good idea Alex : just download a free barcode generator (like Code Barre X), save as vector graphic, open in Illustrator (or Inkscape : it's free)... et voila.