TapLinx Problems with Classic EV1

bopechri — Wed, 17 Jan 2024 15:59:02 GMT

Hi!

I'm trying to use the TapLinx SDK version 3.1.0 to perform a originality check on a Mifare Classic 1K. I have tested the TAG with the NXP TAGINFO APP installed on the same android device and it correctly recognises the tag as an Original Classic EV1 1K (see the attached screenshot).

However with the TapLinx SDK the card is recognised as Mifare Plus SL1 and when I try to do the originality check I get an odd looking error. Is this a bug or am I doing something wrong.

My code:

m_libInstance?.enableReaderMode( 500, { val cardType = m_libInstance!!.getCardType(it) Log.d("NFC", "Taplink version: " + NxpNfcLib.getTaplinxVersion()) Log.d("NFC", "Card type tag name " + cardType.tagName) Log.d("NFC", "Card type name " + cardType.name) Log.d("NFC", "Card type description " + cardType.description) val classic = ClassicFactory.getInstance().getClassicEV1(MifareClassic.get(it)) Log.d("NFC", classic.doOriginalityCheck().toString()) }, FLAG_READER_NFC_A )

And this is the log output:

Taplink version: 3.1.0 Card type tag name Plus SL1 Card type name PlusSL1 Card type description Plus SL1 java.lang.NullPointerException: Attempt to read from null array at com.nxp.nfclib.classic.MFClassic.isFNUID(:897) at com.nxp.nfclib.classic.MFClassicEV1.doOriginalityCheck(:337)

Is this a BUG or am I doing something wrong?

Thanks

Re: TapLinx Problems with Classic EV1

EduardoZamora — Thu, 18 Jan 2024 20:03:05 GMT

Hello @bopechri,

Hope you are doing well.

My apologies, this is not the proper support path for this inquiry. Please, consider redirecting your inquiry to the TapLinx Developer Community.

Regards,
Eduardo.

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