the attached is a simplistic demonstration of contactless (NFC) credit card recognition. it works for me (i have 2 credit cards). i have no idea whether it can communicate with your card. i would be interested in knowing whether it does and what you see (personal data obfuscated, of course). the enormity of the emv documentation and the number of credit card id's and api's boggle the mind. the whole system is designed not to be trivially hacked. but for anyone wanting to know if it's possible to "see" a contactless credit card with b4a, it is. exactly what all you can see is controlled by what each card issuer wants you to see.
update: thanks to feedback from jaguilar, new version attached.
also note, the thing can read regular NFC tags (text, http links and maybe others). i borrowed from an earlier project to include credit cards.
edit 15.01.22 new version (3) attached. shows the dialog between card and "terminal". some comments after #7
edit 5.2.22 new version(6) attached. "working hard to read your card?"
update: thanks to feedback from jaguilar, new version attached.
also note, the thing can read regular NFC tags (text, http links and maybe others). i borrowed from an earlier project to include credit cards.
edit 15.01.22 new version (3) attached. shows the dialog between card and "terminal". some comments after #7
edit 5.2.22 new version(6) attached. "working hard to read your card?"
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