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ISARD: Function and Purpose

February 11, 2009

In layman’s terms, ISARD is simply a way for the banknote-sorting machines to check for the presence of intaglio printing.

Because most counterfeit banknotes are either laser, inkjet or offset printed, ISARD is one of many ways that sorting machines can check a note’s authenticity.

Bills that fail the ISARD can be shunted aside for inspection by humans.

The ISARD results can be adversely affected by the cleanliness and physical condition of a banknote. The effect of counterfeiting via thermography on the ISARD is not known to the author. Whatever the effects may be is likely considered a national secret.

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