[{'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: Additional information for Verizon Wireless customers Verizon Wireless includes a unique identifier in certain web traffic from your mobile device. The identifier is used to help deliver relevant advertising and to deliver other services such as authenticating devices on the network. If you opt out of the Relevant Mobile Advertising program and you have not joined Verizon Selects, or if you activate certain types of lines that are not eligible to participate in our advertising programs, Verizon Wireless will stop inserting the Unique Identifier Header (UIDH). The identifier will continue to appear for a short period of time while we are updating our systems."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Device_ID_1stParty.'}]