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The man who invented the computer chip used on smart cards, Roland Moreno, has died.

According to La Republica, Moreno was 29 when he first patented the idea for a miniature circuit board that could hold secure electronic data.

His idea changed shopping, commuting, banking and passports and paved the way for the mobile phone in 1974.

It was in France where his idea first caught on. They used the card’s security measures as part of the Carte Bleue debit card system. While this was great for the French, it caused all sorts of problems for foreign tourists whose banks still used magnetic strips.

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