There are over 55 billion U.S. bank notes in circulation around the globe. This means protecting the world’s number one traded currency from counterfeiting and forgery is no easy task. In fact, the $1 bill is one of the least secure American bank notes in the world as it hasn’t been updated in over 60 years.
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 keep cash safe.
Chapters:
0:00 Preventing counterfeiters
0:50 Level 1: readable by humans
5:01 Level 2: readable by machines
6:01 Level 3: readable by central banks
7:07 Redesigning the $1 bill
Pro Perfected
Experts in engineering and design break down a ubiquitous problem, examining how the world is built and what can make it better.
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