TapLock

A minimalist Android widget that lets you lock your screen with a double tap. Perfect for one-handed use and quick screen locking.

Why TapLock?

While there are several screen-locking apps available on the Play Store, they all share a concerning characteristic: they're closed source while requiring significant system permissions.

The Accessibility Service permission, which is necessary for screen locking functionality, is particularly powerful - it can:

• Monitor all your interactions with apps
• View your screen content
• Track your inputs and gestures
• Access sensitive information

With closed-source applications, you're essentially trusting unknown code with these extensive capabilities. You have no way to verify:

• What data they're actually collecting
• Where that data might be sent
• What other hidden functionalities might exist
• How securely they handle their permissions

TapLock solves this trust problem through radical transparency:

• 100% open source - every line of code is visible and auditable
• No internet permissions - physically cannot transmit data
• Minimal, focused codebase - easy to review and verify
• Uses Accessibility Service solely for screen locking - nothing else
• No analytics, no tracking, no data collection
• No unnecessary permissions or features

You don't have to trust our privacy claims - you can verify them yourself in the source code. This is the key advantage of open-source security: trust through transparency.

Features

• 🔒 Lock screen with double tap
• 🎯 Customizable double-tap timeout
• 🔍 Transparent widget - doesn't interfere with your home screen aesthetics
• 🛡️ Minimal permissions - only uses accessibility service for screen locking
• 📱 Resizable widget
• 🎨 Material Design 3 UI
• 🔒 Privacy focused - collects no personal data

Getting Started

Requirements

• Android 12 (API 31) or higher
• 1MB of free space

Installation

1. Download the application from Google Play or F-Droid (coming soon!)
2. Add the widget to your home screen:
   • Long press on your home screen
   • Select "Widgets"
   • Find "TapLock" in the list
   • Drag and drop the widget to your desired location
3. Enable the Accessibility Service when prompted
4. Double tap the widget to lock your screen

Configuration

1. Open the TapLock app
2. Adjust the double-tap timeout in Settings (default: 300ms)
3. The widget is transparent by default and can be resized to your preference

Building from Source

1. Clone the repository:

git clone https://github.com/modelorona/TapLock.git

2. Open the project in Android Studio Hedgehog or later

3. Build the project:

./gradlew assembleDebug

Privacy

TapLock is designed with privacy in mind:

• No internet connectivity required
• No data collection
• Minimal permissions (only Accessibility Service)
• Open source for transparency

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

This project is licensed under the Apache License 2.0 - see the LICENSE file for details