Payment cards. For questions about storing credit card numbers, see also pci-dss. For questions involving the physical object, see also smartcard (if the card has a chip).

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Storing Credit Card Information on Mobile Phones

I've inherited the code-base for a legacy mobile app (both the native Android and native iOS version) and am running a security review on it, a few things stood out to me. The app allows a user to ...
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TPM-esque Credit Card Solutions?

Lately, there have been a couple of projects which aim to replace all the credit cards in your wallet with a single smart device which will hold all of them, sync with your smartphone, etc. (Namely ...