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Re: Articles on RC5 and GOST in January 95 Dr Dobbs Journal
>
> Ian Farquhar writes:
> > Around the mid 1980's a rather interesting device appeared. It was
> > essentially an automated scanner for high-density barcodes.
>
> A recent mini-article in "WiReD" mentions a barcode-like encoding
> mechanism being promoted by (I think) Xerox. It's apparently denser
> than barcode and it survives copying well.
The Xerox technology is essentially a series of tiny slashes and
backslashes. The slashes stand for a 1 and the backslashes a 0 -
or vice-versa. This gives you a binary data stream that
you can work with. From what I understand, without looking at them
closely, the area with these slashes looks like a gray screen.
When I first read about this technology a couple of months
ago, it was given as a way that sufficiently smart color
copiers could restore original color to a black and white copy.
Of course there are all kinds of other applications....
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Dan Oelke Alcatel Network Systems
[email protected] Richardson, TX
http://spirit.aud.alcatel.com:8081/~droelke/