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During an EMV transaction, the Complete Transaction stage will return tag 99 if a PIN was entered. The instructions below show you how to use the uDemo to decrypt the pinblock that resides in tag 99. Decrypting the pinblock requiresknowledge of the BDK. So, these instructions assume your card reader/PIN pad is injected with a demo key. 

uDemo (USDK_DEMO) - Home

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