Data --> Paper and back for Linux

Caleb Marcus caleb.marcus at gmail.com
Wed May 28 00:31:21 UTC 2008


Thanks for the information.
On Tue, 2008-05-27 at 16:54 -0700, Bruce Ferrell wrote:
> http://google-code-updates.blogspot.com/2007/11/zxing-1d2d-barcode-decoding-source-code.html
> 
> and a bit more code
> 
> Caleb Marcus wrote:
> > Thanks, that's very interesting stuff. However, I'm looking for more of
> > something that'll print things in a machine-only-readable form... to be
> > able to fit more data on a page.
> > On Wed, 2008-05-28 at 07:06 +0800, Sandy Harris wrote:
> >> On Wed, May 28, 2008 at 6:03 AM, Caleb Marcus <caleb.marcus at gmail.com> wrote:
> >>
> >>> I'm wondering if there's any software available that will take data,
> >>> produce an image that can be printed, and allow a scanned version of it
> >>> to be converted back to data. There's always base64 and OCR, but I'm
> >>> wondering if there's anything that'll get higher usable density. I'm
> >>> thinking of making something like this for fun, but it'll be difficult,
> >>> and it would be nice to look at previously-done examples of it.
> >> It has been done. US laws forbade export of cryptography source,
> >> but books are constitutionally protected so PGP developed tools
> >> for scannable books.
> >>
> >> Discussion and links:
> >> http://www.mirrors.wiretapped.net/security/cryptography/literature/cracking-des/chap-4.html
> >>
> >>
> >>
> 
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