Hi, I'm David, and I'm working on a mobile app on android to read #NTAG 424 DNA # cards. I want to offer a solution for devices that don't have NFC, my current option is to use an MPOS that connects via bluetooth to the cell phone; I already have the communication between the cell phone and the MPOS done, this MPOS gives me the option to send APDU commands to an NFC card, and it is from there that I want to start the communication
I tried with the command 90600000 followed by 90AF0000 to get the version and it works fine, but at the moment of using the command 9051000000 I get the error 91AE, I was checking and it is about the authentication, since the communication method is FULL, but how do I enable it, from what I understood it is implicit in the command, I skipped a step? or where can I approach it.
What I want to do is to get the UID of the tag to query it in my DB to get a previously configured key and read the 03 file of the tag.
I appreciate any help you can give me, and thank you for your attention.
Hi @Sziegfried,
For security purposes, an NTAG 424 is not recommended for a POS solution, I would recommend starting with a MIFARE Ultralight if you are planning to include money, and transactions.
Which reader are you using to test the communication? Could you provide a log of the response from the tag?
Best regards,
Julián