What Is An Advertising ID?
广告 ID 是分配给手机、电脑或平板电脑等设备的唯一的匿名标识符，由字母和数字组成。
Are There Different Types of Advertising IDs?
The three most popular types of Advertising IDs are:
What Are Advertising IDs used for?
Advertising IDs help advertisers track user-level activity and data so they can deliver tailored advertisements. If the channel in question has allowed IDFA or GAID tracking, and if the advertiser has set up user tracking successfully, these advertising IDs can give advertisers a lot of information about users' in-app behavior without revealing their personal information. Advertisers can then use that information to optimize their campaigns and scale their businesses.
What Are The Limitations Of Advertising IDs In The Post-IDFA World?
The Introduction Of App Tracking Transparency (ATT)
Ever since the implementation of privacy changes and App Tracking Transparency (ATT), an iOS pop up asks users for consent to be tracked. The trend is that more and more users are choosing to opt out of targeted advertisements.
The best strategy to follow when requesting users' IDFA and increasing the chances of them accepting the prompt is Kevin Bravo 的建议.
Apple allows developers to place the ATT native pop up where they want, but limits them to only show it once per device, so developers usually place custom pop ups strategically within their app.
This could look something like a custom message stating that opting in to ad tracking could help users with their overall ads experience. Such a message is followed by a 'next' call-to-action that leads to the native ATT pop up.
For those users who accept the ATT, developers receive their advertising ID and are able to track their activity. For those who reject, developers and ad networks will not have access to their advertising ID and will receive '0000-0000-0000-0000' in its place.
SKAdNetwork: The New Attribution Framework
SKAdNetwork 是 Apple 提供的一种以隐私为中心的归因框架。该模型允许开发人员和广告平台在维护用户隐私的同时，跟踪应用程序的安装情况。
To learn more about SKAdNetwork 4.0, read 这篇文章.