Federal Reserve notes have been undergoing design changes since 1996 in response to increased counterfeiting, a result of new technology. These changes have included the addition of multiple colors for the first time since the early 20th century and the addition of a series of measures such as micro-printing, security threads and color changing inks. The result has been a more colorful and interesting-looking currency, though the basic designs have not changed, in part to prevent confusion in international markets, where the dollar continues to be the preferred currency.
Did You Know?
Paper currency was first issued with “In God We Trust” in 1957. The phrase appears on all currency Series 1963 and beyond.