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A comment on Detailed Financial Histories Exposed for Thousands. Parent comment

Re:Detailed Financial Histories Exposed for Thousands by ng12 on Saturday December 02, 2017 @06:22PM (#15834877)
Ok, how do we use that to build a useful system? How do I open a credit card in this world such that my key can't be stolen/exploited?
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Re:Detailed Financial Histories Exposed for Thousands by warkdarrior on Saturday December 02, 2017 @06:27PM (#15834915)
Public key cryptography.
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Re:Detailed Financial Histories Exposed for Thousands by ng12 on Saturday December 02, 2017 @11:04PM (#15835901)
Key-based cryptography falls apart once you have a manual component to it. Let's say hypothetically I have an ID card containing my keys -- how do I use it to pay a bill online?
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