Read Mifare Plus UID on iOS

[dcanora]

Hello! I'm trying to read a tag's UID (serial number). This is easily done on Android, but I haven't found the magic combination of commands to do the same on iOS.

Wakdev's NFC tools on Android identifies the tag as ISO 14443-4 / Mifare Plus , with IsoDep & NfcA technologies. The iOS version of the same app says the tag type is ISO 7816 / Infineon Technologies, with "unknown" technology.

Both apps display the correct serial number.

I've attempted a whole host of different ways to read. I've found the library finds the tag with NfcManager.requestTechnology([NfcTech.IsoDep, NfcTech.NfcA]), but then .getTag() returns an empty object {} and every attempt to try to read the tag, including with NfcManager.isoDepHandler.transceive, has resulted in (at best) a Not connected error.

I'm using Expo. This is my plugin config:

["react-native-nfc-manager", 
    { "nfcPermission": "REMOVED", 
      "selectIdentifiers": ["6D6966617265"],   <-- That's the Mifare AID
      "includeNdefEntitlement": false 
    }
]

Since the iOS version of NFC Tools returns the serial number, it seems like it should be possible to get it with this library. I appreciate any suggestions... Thanks!

[dcanora]

BTW, I saw in the readme the mention if writing ISO7816 tags... but since I'm only reading I didn't pay too much attention. But I have gone back and tried those AIDs in the plugin config (see below) but still getting the same responses - .getTag() returns an empty object and NfcManager.isoDepHandler.transceive returns a Not connected error.

Still seeking the magic combination of commands...

Updated plugin config:

["react-native-nfc-manager", 
    { "nfcPermission": "REMOVED",      <-- This is not the actual string 
      "selectIdentifiers": ["D2760000850100", "D2760000850101"],     <--  7816 AIDs taken from Readme
      "includeNdefEntitlement": false 
    }
]

[dcanora]

Relevant code snippet:

await NfcManager.requestTechnology([NfcTech.IsoDep])
.then(() => {NfcManager.getTag()}) 
.then((tmpTag) => {                                                      
   NfcManager.isoDepHandler.transceive([0xFF, 0xCA, 0x00, 0x00, 0x00]).then((response) => {
    console.log('[nfcServices]  transceive response: ', response);                    
   }).catch((ex) => {
    console.log('[nfcServices] transceive error: ', ex);   <-- returns [Error: Not connected]
  });
  console.log(`[nfcServices] tmpTag: ${JSON.stringify(tmpTag)} `);   <-- returns undefined
});

[dcanora]

Also tried to simplify the code and more closely follow the examples (also removing the .getTag() along the way) with no luck.

await NfcManager.start().catch(() => 0); 
const tech = await NfcManager.requestTechnology([NfcTech.IsoDep]); 
const response = await NfcManager.isoDepHandler.transceive([0xFF, 0xCA, 0x00, 0x00, 0x00])
.catch((ex) => {
    console.log('[nfcServices] getMedallionId transceive error: ', ex);      <-- still returns [Error: Not connected]
});
console.log('[nfcServices] getMedallionId transceive response: ', response); 
NfcManager.cancelTechnologyRequest().catch(() => 0);