Eurion constellation
2004-01-20 21:26:02.1242+01 by Dan Lyke 1 comments
Okay, this is fascinating. You know how modern photocopiers won't make copies of some currency? /. has had some recent stories about currency detection in various products, here and here.
What's most fascinating is how they do it. In this comment on the second thread there's a link to a PDF which shows the pattern that the assorted devices and software are looking for (in the blue channel, apparently). Incorporate that into your graphic design, and "poof", you put your users through issues while trying to scan or reproduce your artwork.
I need to figure out the exact ratios involved so that I can make a T-shirt...