LineShield1.4.0

Enter your CURP, RFC, or passport number to check which phone lines are registered under your identity in Mexico. LineShield automatically queries more than 80 official CRT portals, helping reveal registrations made without your permission or for potentially malicious purposes. A process that can take three to five hours manually is reduced to roughly five to fifteen minutes.

The app encrypts submitted information on the device with AES-256-GCM through Android Keystore, keeping the encryption key inside the device’s secure hardware. Stored data has a 24-hour time-to-live and is then erased automatically. LineShield uses no external servers, advertising, or tracking, and its local implementation includes EncryptedSharedPreferences alongside Kotlin and Jetpack Compose.

Developed by Six-Seven, the Android app brings the same checking approach available through the Chrome and Firefox extensions to people who do not use a computer or prefer checking from a phone. It is useful when investigating suspected identity misuse, including while away from a desktop computer.

Version 1.4.0 requires Android 8.0 or later and supports arm64-v8a, armeabi-v7a, x86_64, and x86 devices. LineShield is open-source software under the MIT license.