[Dmitry Solgalov]

Dear colleagues,

Please let me know if any other info is needed for investigation.
I would appreciate any advice from your side.

Best regards,
Dmitry Solgalov

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[Dmitry Solgalov]

Dear colleagues,

do you have any news on the matter of this topic?

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[Dmitry Solgalov]

I've also tried a code from the SDK's sample and it caused another error:
com.nxp.nfclib.exceptions.PICCException: Error : 91AE
at com.nxp.nfclib.desfire.ᐝ.ˏ(:11068)
at com.nxp.nfclib.desfire.י.ˎ(:5223)
at com.nxp.nfclib.desfire.ᵋ.ˋ(:12050)
at com.nxp.nfclib.desfire.ᵗ.writeData(:344)
at com.nxp.nfclib.desfire.ᵗ.writeData(:331)
at com.nxp.nfclib.desfire.ᵗ.writeData(:313)

The code snippet:

if (nfcTag instanceof INTAG424DNA) {

                        INTAG424DNA ntag424DNA = (INTAG424DNA)nfcTag;

                        ntag424DNA.isoSelectApplicationByDFName(NTAG424DNA_APP_NAME);

                        KeyData aesKeyData = new KeyData();

                        Key keyDefault = new SecretKeySpec(KEY_AES128_DEFAULT, "AES");

                        aesKeyData.setKey(keyDefault);

                        ntag424DNA.authenticateEV2First(0, aesKeyData, null);

                        ntag424DNA.getReader().setTimeout(2000);

                        ntag424DNA.writeData(03, 0, data);

}

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[Dmitry Solgalov]

Dear TapLinx Support team!

Please find a code that causes the error below:

byte[] payload = Utilities.append(

                NDEF_VERSION,

                MIRROR_PLACEHOLDER.getBytes(),

                //our business info

);



ICard mTag;

if (CardType.NTAG424DNA.equals(cardType)) {

    mTag = DESFireFactory.getInstance().getNTAG424DNA(customModules);

} else if (CardType.NTAG424DNATagTamper.equals(cardType)) {

    mTag = DESFireFactory.getInstance().getNTAG424DNATT(customModules);

}



NdefRecordWrapper ndefRecordWrapper = NdefRecordWrapper.createMime(CUSTOM_MIME_TYPE, payload);

NdefMessageWrapper ndef = new NdefMessageWrapper(ndefRecordWrapper);

((INdefOperations) nfcTag).writeNDEF(ndef);

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[Dmitry Solgalov]

Thank you for the clarification!

Could you please advise something regarding my second question: "Is it possible to lock the pages 0x28--0x2A via TapLinx SDK?" ?

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[Dmitry Solgalov]

Dear TapLinx team, thank you for the response.

Could you please clarify which pages is in scope of makeCardReadOnly() method? Why does 0x03 (CC) page stay intact?
Is it possible to lock the pages 0x28--0x2A via TapLinx SDK? I saw NTAGs with these pages locked, so I conclude that it is possible from the technical point of view.

Best regards,
Dmitry Solgalov

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[Dmitry Solgalov]

BTW, I tried to fulfill "Lock tag" function from the NXP TagWriter app and got the same results. Is it a bug or a feature?

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