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Mobile CVM Results Decoder

Decode the Amex ExpressPay Mobile CVM Results (tag 9F71) — the 3-byte object a mobile wallet returns in the GPO response reporting whether on-device CVM was performed, required, and its result.

9F71 Mobile CVM Results — Amex Kernel 4 3 bytes / 6 hex chars

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Standards & Guides

🇨🇳UnionPay Kernel 7📡APDU Protocol