Unified Mobile Device Identifier Mapping Across Apps and Browsers

The patent introduces a service endpoint as an intermediary between the browser and the retargeting system. The service endpoint receives requests from the browser containing a transient identifier, maps it to a stable device identifier using mappings obtained from native applications, and returns the stable identifier. This intermediary approach allows the system to bypass cookie blocking mechanisms while maintaining reliable user tracking capability.

The patent creates a universal opt-out mechanism that works across both native applications and mobile browsers through a common service endpoint. The service endpoint handles both app-based and browser-based requests using the same interface and mapping logic. By making the opt-out mechanism universal and multi-functional, the patent simplifies user operation while managing integration complexity through a standardized approach.

The patent performs preliminary actions by establishing mappings between transient identifiers and stable device identifiers in advance through native applications. These mappings are stored and maintained by the service endpoint before browser-based tracking is needed. By performing this mapping establishment in advance, the system ensures high tracking accuracy when the browser needs to identify users, while the mapping data is already available and does not need to be collected in real-time, reducing information loss.