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Android System SafetyCore: on-device safety service

By Hafiz Rahman

Editor, tools and utilities

Built-in technology that Google Messages features call on
Image checks that run on the phone itself
Sensitive Content Warnings for potentially unwanted content
Results and warnings kept private to the user
Sensitive Content Warnings is a separate, optional feature

What the SafetyCore service is

SafetyCore is a Google system service rather than an app you open and use directly. It supplies the underlying technology that other safety features rely on, and the listing names Google Messages as the main example. It is listed for Android devices and is aimed at people who want the messaging protections that depend on it.

How Sensitive Content Warnings uses it

The main feature built on SafetyCore is Sensitive Content Warnings in Google Messages. Its purpose is to help a user protect themselves when they receive potentially unwanted images. The service does the analysis that feeds those warnings, so the messaging feature itself does not need to carry that technology.

The listing describes Sensitive Content Warnings as a separate, optional feature. SafetyCore provides the groundwork for it, but installing the service does not by itself switch the warnings on.

Where image checks happen and who sees results

According to the listing, image processing for Sensitive Content Warnings takes place on the device, not on a remote server. The developer says the images themselves, along with the specific results and warnings they produce, stay private to the user.

The developer also points to a Google help article for more detail on the feature, linked from the listing.

Which parts depend on SafetyCore

SafetyCore is the shared layer. Google Messages is the feature the listing names as using it, and the listing presents that feature as optional, so a person can have the service on the phone without using the warnings. The developer frames the service as the technology behind several safety features, with Messages as the example given.