From hidden magnetic fields to the way ink bleeds across the paper, WSJ sits down with a leading currency expert to explore the techniques used to prevent counterfeiting and forgery.

Information provided on Forbes Advisor is for educational purposes only. Your financial situation is unique and the products and services we review may not be right for your circumstances.

Information provided on Forbes Advisor is for educational purposes only. Your financial situation is unique and the products and services we review may not be right for your circumstances.

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