[Cryptography] Magnetic media destruction question

[Jerry Leichter]

| [State of the art on reassembling shredded documents]
Vernon Vinge predicted this in his (highly recommended) 2006 novel Rainbow’s End.  One element of the story involves a decision to save space and money by digitizing the paper books, magazines, and other records in libraries.  The method is destructive to the originals:  Books are tossed into the maw of a machine the finely shreds them, then sends the shreds flying down a kind of wind tunnel, whose sides are covered in lamps and cameras.  Software then reconstructs the books in digital form.  Apparently we could now pretty much build such a thing.

Interesting (if likely of no practical use) challenge:  Come up with some combination of paper/ink/font choice that frustrates this kind of technology. I’m thinking of an analogue to the VanEck-resistant screen fonts that were developed back in CRT days.
 
                                 -- Jerry