[{'role': 'user', 'content': "Analyze the following clause from a privacy policy and determine if it's fair or unfair. Also identify any privacy practices mentioned: Learn to recognize your voice and your launch phrase. This creates a mathematical representation of your voice sample that we use to trigger Moto Voice. For versions of Moto Voice that allow a custom launch phrase, Moto Voice will also keep a recording of it on your device for authentication purposes. You can also play it back to remind yourself at any time."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]