[{'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: "Do Not Track" Signals. Your browser settings may allow you to automatically transmit a so called "Do Not Track" signal to websites and online services you visit. Sony Mobile currently does not alter its practices when it receives a "Do Not Track" signal. More information is available at http://www.allaboutdnt.com. Also note that third parties may collect personal information about your online activities over time and across different websites when you visit our websites or other online websites and services.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]