> Nathan Russell wrote:
>
> > I might note that it's impossible to encrypt something so it cannot
> > be copied exactly; even now, it is very common for pirate DVD
> > manufacturers to simply copy the original disc byte for byte, without
> > even needing to crack the encryption.
>
> I guess "grey bits" never caught on. "Grey bits" were a copy-protection
> mechanism in which parts of the original media a program is distributed on
> were encoded poorly, so that repeated reads of the grey sections would
> produce different results. Before running, the program would try to read
> the grey section until something came up different.
So it wouldn't work if played on an excellent high signal-to-noise ratio
reader ? :-)
Jean Flinois <[EMAIL PROTECTED]>
V-Technologies, Savennières
tél +33 (0)2 4172 1077
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