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http://www.bbc.co.uk/news/technology-24431952
The US Federal Reserve has issued a new hi-tech $100 banknote comprising several new security features.
It includes a blue 3D security ribbon and a bell and inkwell logo that authorities say are particularly difficult to replicate.
These combine with traditional security features, such as a portrait watermark and an embedded security thread that glows pink under ultraviolet light.
The 2010 design was delayed because of "unexpected production challenges".
The US Federal Reserve has issued a new hi-tech $100 banknote comprising several new security features.
It includes a blue 3D security ribbon and a bell and inkwell logo that authorities say are particularly difficult to replicate.
These combine with traditional security features, such as a portrait watermark and an embedded security thread that glows pink under ultraviolet light.
The 2010 design was delayed because of "unexpected production challenges".
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