How are push permissions memorialized in a system?

Push permissions are memorialized in a system primarily through push tokens. When a device installs an application that requests push notifications, it generates a unique push token that identifies that specific installation. This token is sent to the backend server, which allows the server to send notifications directly to that device. The push token encapsulates the user's permission status for receiving notifications, making it the most relevant and specific method of capturing push permissions.

The push token is tied to the application and device, ensuring that notifications are directed correctly and efficiently. This process is fundamental for managing user engagement and ensuring that communication can be personalized and relevant.

In contrast, user preferences generally relate to how users choose to receive notifications but do not intrinsically store the technical information necessary for sending those notifications. Storing logs can help track notification delivery and user interactions, but it doesn't memorialize permissions directly. User IDs serve to identify users within a system but do not specifically relate to their permissions regarding push notifications.