This idea has been merged into another idea. To comment or vote on this idea, please visit DMA-I-78 Add support for biometrical login aka TouchID and FaceID.
Today, the app asks for the ID password much to often. This should be configurable (timeout) and also - as it is standard in mobile apps now for some time, including IBM's, allow to use the fingerprint when the app prompts for re-authentication. This is more comfortable and stays very secure.