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Block cookies, mobile advertising IDs, and data uses in Ad Exchange

To choose whether to block Google Demand sources, including GDN and DBM, from showing ads based on user interest categories or remarketing, and allow the use of visitation information from your site to help create these interest categories, please use the "User-based data (Google Demand Sources)" settings.

This Ad Exchange feature can also be accessed from within DFP. Learn more about Ad Exchange in DFP.

To block other buyers from showing ads based on user interest categories or remarketing, or allow the use of visitation information from your site to help create these interest categories, please see below.

The following settings enable you to opt out of certain data collection, cookie matching, and targeting activities by buyers, including that based on interest categories and remarketing.

  1. Click the Rules tab.
  2. From the sidebar, click Blocking.
    To access this feature from DFP instead of Ad Exchange, select Inventory and then Ad Exchange rules and then Blocking.
  3. Click the appropriate syndication type sub-tab (for example, Display).
  4. Create a new rule or edit an existing one.
  5. Go to the “Cookies and data uses (non-Google Demand)” tab.
  6. Decide which inventory to include or exclude from your targeting
  7. You can allow and block ads according to their use of cookies and data usage, and targeting methods. 
    • Match-coding for subsequent data-based targeting on same users (web only — not applicable to Mobile In-App): If you apply this setting, Google Ad Exchange will not provide cookie matching (match tags) in the creative to buyers that have not won the impression. This control only applies to non-Google buyers participating in the Ad Exchange auction.
    To choose whether to block Google Demand sources, including GDN and DBM, from showing ads based on user interest categories or remarketing, and allow the use of visitation information from your site to help create these interest categories. please use the "User-based data (Google Demand Sources)" settings in the default Blocking rule. For all other buyers, if you enable any of the settings below, Ad Exchange will let buyers know of the setting, and filter any ads that buyers have declared in their RTB ad calls that meet the applicable setting(s). However, buyers are not required to make these declarations. If a buyer has not made a declaration, their ads won't be blocked. 
    • Data collection for subsequent use in targeting or remarketing: If you apply this setting, Google will inform buyers of the setting, and filter out ads where an RTB call declares that data will be collected for subsequent use in targeting or remarketing. This setting applies to all non-Google buyers.
    • Targeting consumers based on interest categories: If you apply this setting, Google will inform buyers of the setting, and filter out ads where an RTB call declares that the ad will target consumers based on user interest categories. This setting applies to all non-Google buyers. 
    • Targeting consumers based on remarketing lists: If you apply this setting, Google will inform buyers of the setting, and filter out ads where any RTB call declares that the ad will target consumers based on remarketing lists. This setting applies to all non-Google buyers. 
  8. Click Save.
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