No offense, but this information is wrong. Data Matrix is completely unencumbered by patents. For one thing, it was released into the public domain by its inventor, and for another it's so old that even if there had been patents they would have expired by now.
There was one "IP" company that made some noise in 2006-2007 claiming to cover some of the underlying technology in their patent portfolio, but they were handed their hats in court. I followed the issue very closely, even stopping distribution of my Data Matrix open source project for a while, pending this outcome. But rest assured that Data Matrix is unencumbered by patents and safe to use in your projects.
Slashdot Mirror
Whoops. That should be "--export-secret-key" and "--format=PS".
Even better, just ignore my message and find the superior post on this topic by c_g_hills above.
Yeah, I stink at slashdot.
$ gpg --export | dmtxwrite --encoding=8 --format=PNG | lp
To be honest, I thought trusted paper keys were already common knowledge among geeks:
http://en.wikipedia.org/wiki/Trusted_paper_key
No offense, but this information is wrong. Data Matrix is completely unencumbered by patents. For one thing, it was released into the public domain by its inventor, and for another it's so old that even if there had been patents they would have expired by now.
There was one "IP" company that made some noise in 2006-2007 claiming to cover some of the underlying technology in their patent portfolio, but they were handed their hats in court. I followed the issue very closely, even stopping distribution of my Data Matrix open source project for a while, pending this outcome. But rest assured that Data Matrix is unencumbered by patents and safe to use in your projects.