Option out of behaviourally targeted advertising

If you wish to limit behaviourally targeted advertising, you can do so by limiting ad tracking in your device settings:
 
You can reset your Advertising Identifier and depending on your device, select to opt out of interest-based ads (Android) or turn on the Limit Ad Tracking setting (iOS).

Facebook
Privacy Policy: https://www.facebook.com/about/privacy
 
Google
Privacy Policy: https://policies.google.com/privacy
 
Unity Technologies
Privacy Policy: https://unity3d.com/legal/privacy-policy

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