Why old credit cards couldn't get wet

Plastic" is synonymous with credit cards these days, but that wasn't always the case.

Credit cards were originally made of cardboard.

Science & Industry

"P lastic" is synonymous with credit cards these days, but that wasn't always the case. The first credit card was created in 1949 after businessman Frank McNamara forgot to bring his wallet to dinner one night in New York City. The acute embarrassment he felt was enough to inspire him to create a solution alongside his business partner Ralph Schneider. It came in the form of the Diners' Club card, which was made of cardboard and allowed its users to pay their restaurant bills monthly rather than at the time of service. (Unlike with today's credit cards, the balance had to be paid in full every month.)

The Diners' Club was a hit, and a number of companies followed suit. One of them was American Express, which introduced a paper credit card in 1958 and the first plastic credit card a year later. The new material was more durable than its predecessors and also more fraud-resistant, as the letters and numbers were raised rather than simply written. Diners' Club, which amassed 42,000 members within its first year and 1 million by 1959, was acquired by Citibank in 1981 and has been owned by Discover since 2008.

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By the Numbers

Average number of credit cards per person in the U.S.

3.7

Average credit score

715

Americans with a credit card as of 2021

190.6 million

Total U.S. credit card debt in 2025

$1.17 trillion

Did you know?

Most women couldn't get a credit card until 1974.

Prior to 1974, applying for and receiving a credit card was an uphill battle for women. Married women only received them under their husband's name, and single women almost always needed a male relative to cosign their applications. Banks were well within their power to deny female applicants even if they were fully capable of paying off a credit card on their own. That came to an end when Congress passed the Equal Credit Opportunity Act (ECOA) in 1974, which banned the practice of discriminating against a prospective borrower on the basis of sex — language made famous by a brief cowritten by Ruth Bader Ginsburg for the 1971 Supreme Court case Reed v. Reed.

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