Understanding different NFC tag-technologies

Question

I am trying to understand how to handle different tag technologies. Until now I wrote/read my tags using NDEF messages. Now I want to read/write NfcV tags.

Reading different tutorials I found out, that I need to use the transceive(byte[]) method of an NfcV object.

Trying to work with NfcV I faced very random and wrong behavior. Data was not sent, saved into wrong blocks or only partially saved, while mixing up with previous data. NDEF message saving always overwrote the previous data.

Am I just going the wrong way, can i use NdefMessage/NdefRecord on NfcV tags?

Answer 1

You can only use Android's Ndef/NdefFormatable tag technologies if the operating system supports the Type V NDEF tag platform specification for that tag. Particularly with Android versions prior to 4.2, there is only limited support for NDEF on NfcV (ISO 15693) tags.

If Android does not list Ndef/NdefFormatable for your tag, you will have to stick to using the tag's specific command set with the NfcV.transceive()-method.