[{'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: Windows HelloWindows Hellomainwindowshellomodule Summary Windows Hello provides instant access to your devices through biometric authentication. If you turn it on, Windows Hello uses your face, fingerprint or iris to identify you based on a set of unique points or features that are extracted from the image and stored on your device as a template - but it does not store the actual picture or image of your face or iris. Biometric verification data that's used when you sign in doesn't leave your device. You can delete your biometric verification data from within Settings."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]