As long as the device implements, at least one of the core supported capabilities you should be able to authorize it using the standard authorization flow.
If it doesn’t, you might be able to authorize it manually as long as it supports a generic sensor or actuator capability.
If it doesn’t have either of those, you could either modify the driver code yourself as it’s a one line edition, or ask the driver author if they would be willing to add it.
The device does not have any of the core capabilities (Actuator or Sensor). Let me check if I can modify the code, or ask the author if he is willing to do it.