from fido2.hid import CtapHidDevice
from fido2.client import Fido2Client
from fido2.pyu2f import hidtransport
import sys
from random import randint
import array


# Locate a device
#for d in CtapHidDevice.list_devices():
    #print(d)
selector = hidtransport.HidUsageSelector
for d in hidtransport.hid.Enumerate():
    print('1',d)
    if selector(d):
        try:
            dev = hidtransport.hid.Open(d['path'])
            print('2',dev)
        except OSError:
            # Insufficient permissions to access device
            pass