<br><br><div class="gmail_quote">On Feb 17, 2008 9:36 PM, Ivan Krstiæ <<a href="mailto:krstic@solarsail.hcs.harvard.edu">krstic@solarsail.hcs.harvard.edu</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="Ih2E3d">On Feb 15, 2008, at 4:35 PM, Benjamin M. Schwartz wrote:<br>> As you are probably aware, it is possible to read barcodes from the<br>> camera, using software analysis.<br><br></div>We have code in git that encodes arbitrary (but size-constrained) data<br>
as a redundant datamatrix barcode and shows it on the screen, and code<br>that performs image analysis from a camera capture when one XO is<br>pointed at another with such a barcode on the screen to decode the<br>original data:<br>
<br> <<a href="http://dev.laptop.org/git?p=projects/barcode;a=tree" target="_blank">http://dev.laptop.org/git?p=projects/barcode;a=tree</a>><br><br>The original purpose was to facilitate a physical public key exchange<br>
("digital introduction") by holding two laptops up to one another.</blockquote><div><br>So what happened to the idea? I'd think it would be interesting.<br></div></div><br>Any reason it was scrapped?<br><br>
-FFM<br>