The upcoming Android 16 update is set to bring a significant security feature, the Identity Check, to more Android devices. Currently, this feature is only available on Pixel and Samsung phones. With Identity Check enabled, users will need biometric authentication to modify critical security settings when their device is outside of a trusted location.

This feature was initially introduced by Google in its December 2024 Pixel Drop update for Pixel devices and subsequently adopted by Samsung with their One UI 7 update. The limited availability of Identity Check stems from modifications required in the biometric prompt code, which necessitates an OS update. Android 15 QPR1 was the first version to fully support this feature, and Android 16 incorporates all changes from previous versions, making it likely that other manufacturers will include this feature in their Android 16 updates.

Enhanced Security Through Biometrics

With the Identity Check feature, Android devices require user biometrics before allowing access to sensitive data or altering critical security settings. This measure significantly reduces the risk of unauthorized access even if someone knows the unlocking PIN, password, or pattern. The enforcement of Identity Check occurs only when the device is outside the user's designated trusted location, enhancing both security and convenience.

When activated, Identity Check ensures that thieves cannot access saved passwords or other sensitive information, regardless of whether they know the phone’s unlocking credentials. Typically, the biometric prompt dialog allows fallback options such as entering a PIN or password if biometric scanning fails. However, with Identity Check enabled, these fallbacks are disabled unless the app specifically requests them. This strict requirement adds an extra layer of protection, ensuring that only the legitimate owner can make critical changes to the device’s security settings.

Broader Accessibility in Android 16

As Android 16 rolls out, more manufacturers are expected to adopt the Identity Check feature. Since this feature requires only a class 3 (secure) biometric system, most updated Android 16 devices should be compatible. Although it won’t be enabled by default, users can manually check for and activate this feature post-update. Manufacturers like OnePlus and Xiaomi are anticipated to incorporate Identity Check into their Android 16 releases.

The underlying implementation of Identity Check involves modifying the biometric prompt code, which disables fallback authentication methods when the feature is active. This modification has been possible since Android 15 QPR1, but its adoption has been limited to Pixel and Samsung devices thus far. As Android 16 integrates all updates from previous versions, it presents an opportunity for broader implementation across various brands. Users with non-Pixel or non-Samsung Android phones should anticipate having access to enhanced security features once they upgrade to Android 16, reinforcing the overall safety of their devices against theft and unauthorized access.