A Federal Reserve Note is a type of paper currency issued by the Federal Reserve System, the central banking system of the United States. These notes are used as legal tender for transactions and are backed by the government. They come in various denominations, including $1, $5, $10, $20, $50, and $100. Federal Reserve Notes are designed with various security features to prevent counterfeiting, such as watermarks and color-shifting ink. Each note displays the portrait of a notable figure from American history, along with the U.S. Treasury seal and the signature of the Treasury Secretary and the Federal Reserve Chair.