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Published online 30 October 2003 | Nature | doi:10.1038/news031027-7
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Nanoparticles may help fight fraud
Magnetic barcodes could provide counterfeit-proof tagging.
Barcodes peppered with magnetic particles millionths of a millimetre across could mark out fake goods and documents.
Russell Cowburn of the University of Durham, UK, presented the new anti-counterfeit technology at a conference on nanotechnology in crime prevention and detection in London this week.
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