This is an experimental project to use an external NFC reader from Android.
It uses the ACR122U NFC reader from ACS. The NFC reader is connected to the Android with a USB On-the-Go (OTG) cable.
This is a very rough proof of concept written for a client. The NFC functions are provided by the ascsmc-1.1.1.jar.
If you run the app without a reader attached, you'll get an ArrayIndexOutOfBoundsException exception.
This project is a refactoring of this source code https://github.com/don/nfc-acr122