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A comment on Credit cards have a privacy problem. Parent comment

Re:Credit cards have a privacy problem by kccqzy on Monday August 26, 2019 @09:47PM (#20805601)
The amount they need to pay can sometimes be deduced from the card itself. For MasterCard for example they will pay more if it is marked World Elite than if it is marked World. And for VISA, they pay more for Infinite than for Signature.
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