Cover of the textbook Outcomes Advanced - Student's Book

The key answer of exercise 2

The key to exercise solutions in chapter Video 7 - Counterfeit strategy for the textbook Outcomes Advanced - Student's Book with authors Carol Nuttall and Amanda French from National Geographic Learning

Question

Watch the first part of a video about counterfeit prevention in the United States (0.00-2.04). Find out.

Answer

  1. The notes are printed on special paper – a cotton and linen combination. Red and blue security fibres are woven into the paper. A fluorescent thread printed with microscopic text is also woven in. They use optical variable ink, which changes colour in different lights.
  2. They bleach lower denomination notes and reprint them with higher values. They use drugstore glitter to mimic the way optical variable ink changes colour in different lights.