I've added a sigprogs page listing some of the signature programs I've written over the years. As I was researching that, I discovered pictures of one of my programs, a variant of the RSA in 3 lines of perl, that two people have gotten tatooed onto themselves.
#!/bin/perl -sp0777i<X+d*lMLa^*lN%0]dsXx++lMlN/dsM0<j]dsj $/=unpack('H*',$_);$_=`echo 16dio\U$k"SK$/SM$n\EsN0p[lN*1 lK[d2%Sa2/d0$^Ixp"|dc`;s/\W//g;$_=pack('H*',/((..)*)$/)
I remember sending that in, but until today I hadn't realised that my keystrokes had actually translated into needle sticks for two people, Youch!
(The history of why a few people did things like getting programs tattoed on their bodies as a form of political protest is pretty interesting, if you're not familiar with it, the basics is that this tiny 3 line program was considered a dangerous "munition" by the US government, and was thus illegal to export. Nowadays you just have to mail a copy to the CIA or someone before exporting it; OTOH I think my DVD decoder T-shirt is still illegal.)
Anyway, I wonder how to represent this acheivement in my resume? "Munitions tattoo artist"?