code: def get_enroll(self):
          
  
          devices = [DeviceRegistration.wrap(device) for device in self.__get_u2f_devices()]
          enroll  = start_register(self.__appid, devices)
          enroll['status'] = 'ok'
  
          session['_u2f_enroll_'] = enroll.json
          return enroll
docs: Returns new enroll seed