Ads id Reset & break ad trace

Android device's GAID(Google Advertising ID) has the same role with iOS device's IDFA(Advertising IDentifier), and the app can help you to find and copy it easy. This is the defintion: https://support.google.com/googleplay/android-developer/answer/6048248. The Advertising ID was supported by Google Play service and can be reset everytime. If you want to break the ads id trace, you can: 1. Copy the ads id and send to the advertising media; 2. Settings -> Privacy -> Ads -> Reset advertising ID.