Apple uses several methods to keep users' personal information private, even when a whole household shares the HomeView device. The device recognizes up to six people, giving each their own Home Screen with personalized apps and widgets. Apple says personal content stays private to each user, while shared photo albums and music can remain available to everyone in the household, including guests.
For content from apps such as Messages and Calendar to appear, HomeView must recognize the enrolled user's face, and their paired iPhone or iPad normally needs to be present and recently unlocked. There is an exception when the paired device disconnects from Wi-Fi. Personal information may remain accessible if HomeView still recognizes the user and the paired device was recently connected to the same Wi-Fi network, has an active cellular connection, remains in the same location, and has been recently unlocked.
The A18 chip includes Secure Exclaves, a protected processing environment that handles camera and microphone data separately from the rest of the system. Apple says isolation features prevent other components from accessing these environments. According to the company, data processed within the Secure Exclaves cannot be accessed by HomeView's software, apps, users, or Apple itself.
Siri requests have their own protections. HomeView can handle requests on the device or use Private Cloud Compute, Apple's system for cloud processing. Apple says data processed through Private Cloud Compute is neither stored nor made accessible to Apple or anyone else. HomeView also works with compatible smart home cameras to provide end-to-end encrypted recognition of people, familiar faces, pets, packages, and vehicles with a supported iCloud+ subscription.
Source: MacRumors · Summarized by HeadlinesBriefing