I was doing some lunch time Google Reader skimming when I came across an blog post that explains how a printed page from your laserjet printer can be traced back to you. How you may ask? That’s the cool part. It seems the printer will print a dot matrix encoded version of its serial number on every page it prints, all you have to do is decipher the code. I’m assuming this kind of tracking is what ended up helping the FBI nab Dennis Rader (BTK).
A very interesting read can be found over at the blog Brahm’s Yellow Dots.