Example of NFC using Windows Proximity class

windows-nfc.py

"""
Example of NFC using Windows Proximity class.

Tested using Sony RC-S380 (make sure you enable NFP in the driver).

Requires Windows 10 and Python 3.7+ (for WinRT/Python).
"""

import sys
import time

import winrt.windows.networking.proximity as proximity
import winrt.windows.storage.streams as streams


def main():
    device = proximity.ProximityDevice.get_default()
    if device is None:
        print('ERROR: No ProximityDevice found', file=sys.stderr)
        sys.exit(1)

    msg = 'https://dcoles.net'.encode('utf-8')

    # Manually construct a NDEF message
    # (Though it's better to let ProximityDevice.PublishUriMessage do this for you)
    writer = streams.DataWriter()
    writer.write_byte(0b11010011)  # Absolute URI
    writer.write_byte(len(msg))
    writer.write_byte(0)
    writer.write_bytes(list(msg))

    device.publish_binary_message("NDEF", writer.detach_buffer())

    while True:
        time.sleep(3600)


if __name__ == '__main__':
    sys.exit(main())