Tappy External NFC

If you need front-facing NFC reading capability on a device with a rear-facing reader, want a higher performance NFC reader than your device's built-in reader, or simply want to be able to read NFC tags on a device that has no on-board NFC reader, this app allows you to to leverage the TappyBLE line of Bluetooth® NFC readers without having to go through the effort of integrating with the full TappyBLE SDK.

In order to use the Tappy External NFC app, you first must use the app to search for and connect to the TappyBLE readers you wish to use. After that, the app will maintain the connection and attempt to reconnect if the connection ever drops. For those use-cases that only require the Android device to launch URLs read from tag, you don't even need to do anything else as, as the Tappy External NFC app has this functionality built-in!

For more advanced uses, your app needs to register a BroadcastReceiver listening for intents with the action "com.taptrack.roaring.action.TAG_FOUND", "com.taptrack.roaring.action.NDEF_FOUND", or both. When the Tappy finds a tag, the app will broadcast one of these two Intents depending on whether or not the tag contains an NDEF message. Once received, the intent will contain NfcAdapter.EXTRA_ID containing the tag's binary serial number and, in the case of NDEF_FOUND, NfcAdapter.EXTRA_NDEF_MESSAGES just like the intents you would receive from an on-board NFC reader.

Note that this app is not compatible with UID-only TappyBLEs and requires at least version 1.4 of the BasicNFC command family. Additionally, the number of NFC readers you can connect to simultaneously can vary from device-to-device as well as between different Android versions.