Biometric App Locker

byChar0n · Root & System

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android

AI summary

Xposed module that locks individual apps behind biometric authentication by intercepting activity launches at the system framework level. Requires Android 11+, enrolled biometrics, and an Xposed manager with libxposed API 101. v1.8.1 fixes auth prompt cancellation on launch and duplicate prompts from recents. Designed for AOSP and Pixel ROMs.

Generated by AI. May contain inaccuracies.

About this app

An Xposed module to lock apps behind biometric authentication.

About this module

Stock Android never had a native per-app lock, and Private Space (available since Android 15 Beta 2) is a secondary isolated profile where apps run as separate installs with their own data.

This module intercepts activity launches at the system framework level before the target app starts. The Activity is never created until auth succeeds. Tapping a locked app from the recents screen is intercepted too.

A reboot is required after install or update because framework hooks only load at boot (for now). Changing which apps are locked takes effect immediately.

Requirements

- Android 11+ with an enrolled biometric - Xposed manager with libxposed API 101 support

Install

1. Install APK 2. Enable module in your Xposed manager with System Framework scope 3. Reboot 4. Select apps to lock in the Apps tab

ℹ️ Note

For stock AOSP and Pixel ROMs. Other ROMs may work but are untested, use at your own risk. If you're on HyperOS, OxygenOS or ColorOS, your ROM already ships a native app lock and you probably don't need this.

License

GNU General Public License v3.0

xposed module privacy biometric open source root system

What's new

v1.8.1Aug 6, 2026

Bug Fixes
36ccdf2 (auth) Start the unlock prompt on first window focus by @hxreborn
The unlock prompt no longer cancels itself the moment a locked app launches, which sent you home before you could authenticate.
12554f5 (hook) Skip redirect when a recents launch already has a posted auth by @hxreborn
Reopening a locked app from recents no longer stacks a second unlock prompt behind the one already on screen.
35e40ed (hook) Validate token package before consuming a pending unlock by @hxreborn
Unlocking an app from recents no longer asks for a second authentication right after the first one succeeds.