Most typefaces are designed for regularity, so this is quite the purposeful twist. I found a comment from Erik Spiekermann that makes the point
> While nobody could simply turn one of them into another one, now they all look totally forged in the first place. No policeman would notice if you invented new characters instead.[0]
> While nobody could simply turn one of them into another one, now they all look totally forged in the first place. No policeman would notice if you invented new characters instead.[0]
[0]: http://www.printmag.com/article/hot_type_feschrift/
[1]: http://spiekermann.com/gefalschtes-nummernschild/