It’s not every inventor that has a professional psychic for a mother. Believe it or not, that was the inspiration for the classic fortune-telling toy … Magic 8 Ball.
Frank McNamara was having dinner at one of his favorite Manhattan restaurants. When the bill came, his wallet was nowhere to be found. He’d left it in his other suit. His wife was able to cover for him, but McNamara vowed never to be caught without cash again. So he invented the credit card.