The new $100 bill, which just made its debut, has updated security measures to cut down on counterfeiting.
The changes include a blue, 3-D security ribbon that makes bills easier to verify but harder to copy, which will not make North Korea very happy.
And there is also color-shifting ink on the bill that changes from copper to green when it’s tilted. So, if you pick up a 100 dollar bill with a portrait of Ben Franklin on acid, chances are it's legitimate and not a fake.