Blown To Bits

Fingerprints on your laser printouts

Monday, July 14th, 2008 by Harry Lewis

On page 29 of¬†Blown to Bits, we talk about the tiny dots that certain laser printers print, identifying the printer and the precise time at which the document was printed. The official rationale is to catch counterfeiters, since color laser printers can produce excellent facsimiles of US currency. But that’s not the only possible use. Today this became a national story, in USA Today. Worth a read — the possibility we talked about has become standard as Moore’s law and its relatives have driven down the price of color laser printers.

Comments are closed.