Hm, he doesn't say whether he managed to decrypt the passport with the missing checksum in the end, or whether the piercing doesn't matter because it's trivial to calculate the checksum from the rest of the info, or how long that would take. Did I miss it, or is that useful information omitted?
Yep, I saw that section, but thought that the next section was a continuation of it. Maybe you could say a few more things about it, like "since it was trivial to recreate the checksum, I managed to read my passport fine, and then wondered what it would take to guess the entire MRZ" as a segue.
