[{'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: The reason for switching from device IDs to Advertising Identifier is that advertisers are able to use this identifier only for advertising and for no other purpose, while users can choose to opt out of tracking via the settings of mobile phone. Advertising Identifier is an anonymous identifier for advertising purposes which enables users to reset their identifier or opt out of interest-based ads. The parties participating in advertising are obligated to follow users' choice for opting out of tracking according to the app store guidelines."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Ad_ID_3rdParty.'}]