[{'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: Mobile Device Information When you access the Services via a mobile device, we will collect information related to the mobile device such as the serial number or MAC address and the open UDID of the device. We may use this information to improve and personalize our Services for you."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Device_ID_1stParty, Identifier_MAC_1stParty, Identifier_SIM_Serial_1stParty.'}]