This is the community edition of the Ledger Nano S app for the NEO Cryptocoin.
Documentation on how it works is here: sequence diagrams
Run make load to build and load the application onto the device.
After installing and running the application, you can run demo.py to test signing several transactions over USB.
Each transaction should display correctly in the UI. Use the buttons individually to scroll up and down to view the transaction details. Either Sign or Deny the transaction by clicking both top buttons on the 'Sign Tx Now', 'Sign Tx' and 'Deny Tx' screens. The only difference between 'Sign Tx Now' and 'Sign Tx' is their placement order in the screen list, both sign the transaction.
Note that in order to run demo.py, you must install the secp256k1 Python package:
pip install secp256k1