Secret tracking codes in laser printers cracked

The pages that are printed by your colour laser printer may include tiny dots, almost invisible to the naked eye. The dots form a code that can be read by the US Secret Service, ostensibly to track down counterfeiters. Now, for the first time, the code has been cracked.

The Secret Service has admitted before that the tracking information is part of a deal struck with selected colour laser printer manufacturers – including Xerox, Canon and many others. (The Register)

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