What is a "floating bit" when protecting information from copying?

Question

Data protection

I read on Wikipedia: Software protection - "Key diskette".
There are these words:

"Floating beat". One bit is written in such a way that in some cases it is read as "0", in others as "1". The floppy disk is read multiple times; read results must include both zeros and ones.

What is the principle of recording a bit and how the method works in general? (who knows - tell me)

Answer 1

MFM