Good luck distinguishing 0 and O with that font in a random sequence of characters. The type face you linked is not optimized for humans. > Its monospaced let

Good luck distinguishing 0 and O with that font in a random sequence of characters. The type face you linked is not optimized for humans. > Its monospaced letters and numbers are slightly disproportionate to prevent easy modification and to improve machine readability. It's a slightly different issue than what was described in the article (e.g it can't address the cases where IDs are written down).