It was ported by me to a working pyaudio port, and test with help from volunteers. Thank you! It will help you read Credit Cards yourself.

pip install -r requirements.txt

Connect the Square Card reader to your audio input. When running in a terminal it may be easier to run in a loop until it reads the card. When testing, the older Square Card reader worked more often than the newer version.

    while true; do
        ./square_reader.py && break
    done

Please feel free to send patches if you wish to improve this. Thanks!