How can I talk from my JavaCard (or general Smart Card) to the card terminal? I want to display messages on the display of the card terminal.
I can only show messages from the PC on the display of the card terminal. Is tehre a possibility?
The problem is how can you distinguish between outputs from the PC and the CAD or smart card on the display?
How can I be sure that the message show on the display (e.g. the the amount to remit or the message to enter the PIN) is not a fake via a output command or input command from PC side?
Bye, Karsten
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