Which payment innovation, first introduced in 1950 by Frank McNamara, revolutionized retail by allowing consumers to make purchases without carrying cash?

The way we pay for goods has transformed dramatically throughout history. From bartering to cryptocurrency, payment systems reflect both technological advances and changing consumer behaviors. This trivia question explores a pivotal moment in retail payment history that revolutionized shopping and created new possibilities for merchants and consumers alike. Test your knowledge of this transformative retail innovation!

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