[{'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: III. Product Metrics We collect data about how you and your device interact with our products. This includes (1) device information such as manufacturer, model, OS version, language settings, nation settings and applications installed, (2) data regarding our application such as version and installation source, and (3) your interaction data such as views, duration of stay at views, transition from view to view and how you enter and leave the view. The data collected helps us know which functions you like and which functions to improve. This information allows us to improve our products and provide you a better user experience. All data is encrypted before being stored locally or transferred to our servers for analysis. Only authorized personnel can access the summarized data with the original data regarding your interactions destroyed periodically."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]