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You can sign up at the top of the page. The experts at the top universities proved that it was possible for fraudsters to "trick" iPhones into believing it was in contact with a transit gate through only using a common card payment reader used in most shops paired with cheap radio equipment.
They explained that typical fraud detection checks failed to block the payments from going through. It is only Visa cards on iPhones which seem to be affected by the technical glitch, and is not thought to affect other combinations such as Visa on Samsung Pay, or even Mastercard on iPhones.
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