Yes it’s a fact that obese people smell worse than fit people, so if it was a marathon runners convention and everyone actually bathed daily, I’m sure going without deodorant wouldn’t be an issue. Too much fucking might be an issue if the majority of the women aren’t on hormonal birth control.
But I think the issue with anime conventions isn’t lack of deodorant, it’s thinking a shower is something you take every 4-7 days, and ‘eww don’t touch your buttcrack to clean it, that’s nasty!’
I may get flack from the twox crowd for this comment, but talking to my fiance was like talking to a guy when she got off hormonal birth control. Conversation is just… chill now.
That’s probably the next big “oops, we fucked up bad the last 50 years, but men’s birth control is hard!”
Unfortunately that wouldn’t work as this is information inside the PDF itself so it has nothing to do with the file hash (although that is one way to track.)
Now that this is known, It’s not enough to remove metadata from the PDF itself. Each image inside a PDF, for example, can contain metadata. I say this because they’re apparently starting a game of whack-a-mole because this won’t stop here.
There are multiple ways of removing ALL metadata from a PDF, here are most of them.
It will be slow-ish and probably make the file larger, but if you’re sharing a PDF that only you are supposed to have access to, it’s worth it. MAT or exiftool should work.
Edit: as spoken about in another comment thread here, there is also pdf/image steganography as a technique they can use.