The inventor of the first bank-issued credit card was John Biggins of the Flatbush National Bank of Brooklyn in New York. 

In 1946, Biggins invented the "Charge-It" program between bank customers and local merchants. The way it worked was that merchants could deposit sales slips into the bank and the bank billed the customer who used the card.

• In 1950, the Diners Club issued their credit card in the United States. The Diners Club credit card was invented by Diners Club founder Frank McNamara as a way to pay restaurant bills (1950). A customer could eat without cash at any restaurant that would accept Diners Club credit cards. Diners Club would pay the restaurant and the credit card holder would repay Diners Club. 
• American Express issued their first credit card in 1958. 
• Bank of America issued the BankAmericard (now Visa) bank credit card later in 1958.

• Credit cards were first promoted to traveling salesmen for use on the road. By the early 1960s, more companies offered credit cards by advertising them as a time-saving device rather than a form of credit. American Express and MasterCard became huge successes overnight.
• By the mid-70s, the U.S. Congress begin regulating the credit card industry by banning practices such as the mass mailing of active credit cards to those who had not requested them.