如何获取手机的唯一nfc id,而不必在android上阅读nfc[[副本]

private Tag tag;

//Read success.
protected void onNewIntent(Intent intent) {
   super.onNewIntent(intent);

   tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);

   byte[] id = tag.getId();

}

如何获取NFC id,而不必在android上阅读NFC?

谢谢