Authentic dollar bills are equipped with many security features to make them difficult to forge. But that doesnt stop counterfeiters from trying to fool people with fakes. Luckily, anyone can help catch a counterfeit; all you need are a few simple tools and a bit of chemistry. Tien Nguyen details the chemistry behind counterfeit cash.
Lesson by Tien Nguyen
Cristine: But how can you tell if it's counterfeit or not? Like you won't use the pen for every bill. I work at a supermarket and I take in a lot of money but I won't use the pen or the light for every bill that I take in. So how can you tell just by feeling it? Or looking at it? Date: 2020-08-22
