https://code.google.com/p/ndef-tools-for-android/source/browse/#git/ndeftools-util/src/org/ndeftools/util/activity
AndroidApplicationRecord aar = new AndroidApplicationRecord();
aar.setPackageName("org.my.app");
Message message = new Message(); // org.ndeftools.Message
message.add(androidApplicationRecord);
message.add(new GenericExternalTypeRecord("org.my.app", "username", myUsernameBytes);
message.add(new GenericExternalTypeRecord("org.my.app", "password", myPasswordBytes);
NdefMessage toWrite = highLevel.getNdefMessage();
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svzoneii@nate.com