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A comment on Weak bits floppy disc protection: an alternate origins story on 8-bit.

Re:Weak bits floppy disc protection: an alternate origins st... by userbinator on Saturday June 27, 2020 @11:12PM (#23666510)
This reminds me of "weak sectors" as used in the infamous SafeDisc and related CD protections, which exploit a digital aspect of the media (EFM encoding) to create an optical equivalent of a https://en.wikipedia.org/wiki/Lace_card :

https://web.archive.org/web/20090603002402/http://sirdavidgu...

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