interessante Sache:
(manche?) Farblaserdrucker markieren jede ausgedruckte Unterlage
Zitat... According to experts, several printer companies quietly encode the serial number and the manufacturing code of their color laser printers and color copiers on every document those machines produce. Governments, including the United States, already use the hidden markings to track counterfeiters...
[URL=http://www.pcworld.com/news/article/0,aid,118664,00.asp]Quelle[/URL]
hier die liste der Drucker und hier kann man es sogar testen