FYI
---------- Forwarded message ----------
From: Ivan Krstić <krstic@solarsail.hcs.harvard.edu>
Date: Feb 17, 2008 1:36 PM
Subject: Re: bar code scanners on the XO
To: "Benjamin M. Schwartz" <bmschwar@fas.harvard.edu>
Cc: OLPC Devel <devel@laptop.org>
On Feb 15, 2008, at 4:35 PM, Benjamin M. Schwartz wrote:
> As you are probably aware, it is possible to read barcodes from the
> camera, using software analysis.
We have code in git that encodes arbitrary (but size-constrained) data
as a redundant datamatrix barcode and shows it on the screen, and code
that performs image analysis from a camera capture when one XO is
pointed at another with such a barcode on the screen to decode the
original data:
<http://dev.laptop.org/git?p=projects/barcode;a=tree>
The original purpose was to facilitate a physical public key exchange
("digital introduction") by holding two laptops up to one another.
-- Ivan Krstić <krstic@solarsail.hcs.harvard.edu> | http://radian.org _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel -- Edward Cherlin End Poverty at a Profit by teaching children business http://www.EarthTreasury.org/ "The best way to predict the future is to invent it."--Alan Kay _______________________________________________ OVC-discuss mailing list OVC-discuss@listman.sonic.net http://lists.sonic.net/mailman/listinfo/ovc-discuss By sending email to the OVC-discuss list, you thereby agree to release the content of your posts to the Public Domain--with the exception of copyrighted material quoted according to fair use, including publicly archiving at http://gnosis.python-hosting.com/voting-project/Received on Fri Feb 29 23:17:07 2008
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