[{'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: Each Mobile App also sends us the device\'s unique device identifier (or "UID"), a sequence of numbers or characters that are unique to your mobile device. We use this only on the first opening of the Mobile App so that we can confirm to our advertising networks the number of downloads resulting from clicks on their respective ad banners and other marketing tools.'}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Device_ID_1stParty.'}]