Diebold Nixdorf is an American multinational financial and retail technology company that specializes in the sale, manufacture, installation and service of self-service transaction systems, point-of-sale terminals, physical security products, and software and related services for global financial, retail, and commercial markets. Currently Diebold Nixdorf is headquartered in the Akron-Canton area with a presence in around 130 countries, and the company employs approximately 23,000 people. Founded in 1859 in Cincinnati, Ohio as the Diebold Bahmann Safe Company, the company eventually changed its name to Diebold Safe & Lock Company. In 1921, Diebold Safe & Lock Company sold the world's largest commercial bank vault to Detroit National Bank. Diebold has since branched into diverse markets, and is currently the largest provider of ATMs in the United States. Diebold Nixdorf was founded when Diebold Inc. acquired Germany's Wincor Nixdorf in 2016. It is estimated that Wincor Nixdorf controls about 35 percent of the global ATM market.

An automated teller machine (ATM) is an electronic telecommunications device that enables customers of financial institutions to perform financial transactions, such as cash withdrawals, deposits, funds transfers, balance inquiries or account information inquiries, at any time and without the need for direct interaction with bank staff.