Sources: Tencent and ByteDance are testing a new tool called CAID, developed by the China Advertising Association, to bypass Apple's IDFA ad privacy changes
ByteDance and Tencent see if they can keep tracking iPhone users with solution created by state-backed group
Context & Ripple Effects
Apple’s planned IDFA restrictions had already pushed the ad industry toward new targeting methods, as reflected in the industry’s scramble to adapt to the IDFA changes. CAID represents a coordinated China Advertising Association-backed response being tested by two of China’s largest internet platforms.
The test quickly became a platform-governance conflict: Apple later sent cease-and-desist notices to apps testing CAID, and the wider CAID effort ultimately lost traction after Apple blocked app updates. That sequence shows that an identifier’s technical design was not enough without App Store acceptance.
First-order effects
- Tencent and ByteDance gain a potential common identifier for iPhone advertising, aimed at preserving user-level measurement and targeting as IDFA access changes.
- Apple faces an immediate enforcement decision: allowing CAID would weaken the practical effect of its IDFA privacy policy for apps using the alternative identifier.
Second-order effects
- Chinese app developers and advertisers are pulled into Apple’s policy boundary, since CAID’s value depends on whether apps can continue shipping updates through the App Store.
- Apple’s subsequent action against CAID testing makes platform distribution a bargaining lever over ad-tech workarounds, rather than leaving the issue to advertisers and app makers alone.
Third-order effects
- The failed CAID push points to a durable asymmetry in mobile advertising: industry-backed identifiers can coordinate demand, but the operating-system and app-store owner can still determine whether they scale.
- Privacy-policy changes increasingly shift competition from access to a single identifier toward methods that remain compatible with platform distribution rules.
The trend: Mobile ad measurement is moving from universal device identifiers toward platform-governed alternatives, with app-store enforcement deciding which workarounds can survive.