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No, that's too easily machine-read. Print it in a fancy calligraphy font or one with ambiguous characters.

That's too convenient, cameras can read many qr codes at a time. Encode the binary on some punch cards.

Pretty sure cameras can be used to read punchcards too.

This sounds like a fun project. Somebody already did it, apparently: https://hackaday.com/2012/07/30/reading-punch-cards-with-an-...

Reminds me of Lavabit where the US wanted the encryption keys and they printed them out in a 4 point font :D