How will the WellBe Speaker know that I am the one speaking to her and not someone else?

During the setup process or anytime after, you can go through voice training. This will only take a few moments but will allow WellBe to learn your voice for future use. To complete voice training just say “Ok WellBe begin Voice Training” or you can begin voice training within the WellBe Virtual Assistant app, by going to Settings -> Voice Training.