Tracing Counterfeit Currency

Source: The Navhind Times
Date: Thursday, October 21, 2004
Original Link

RESEARCHERS at the Purdue University in the United States have developed a method that will allow authorities to trace documents to specific printers, a technique law-enforcement agencies could use to investigate counterfeiting, forgeries and homeland security matters.The technique uses two methods to trace a document: analysing a document to identify characteristics unique for each printer, and designing printers to purposely embed individualised characteristics in documents.

The technique focuses on laser printers but eventually will be expanded to inkjet printers, said Mr Edward Delp, a professor of electrical and computer engineering at Purdue. Counterfeiters often digitally scan currency and then use color laser and ink jet printers to produce bogus bills. Forgers use the same methods to make fake passports and other documents.

"Investigators want to be able to determine that a fake bill or document was created on a certain brand and model of printer," Mr Delp said. So far, the researchers have been able to identify, the model of printer used to create certain documents in eleven of twelve models tested according to data scheduled to be released during the conference.

Officials also would be able to use the method to determine the authenticity of documents such as airline boarding passes and passports. Such information would enable investigators to determine from what country or region of the world certain printed documents originated, information that could help trace the location of potential criminals or terrorists and their collaborators.

The Purdue researchers are working with the US Secret Service to develop new methods for tracing documents and counterfeit bills. Findings of the research, funded by the National Science Foundation, will be detailed in three papers scheduled for presentation November 5 during the International Conference on Digital Printing Technologies in Salt Lake City, Utah. - Washington File