How It Works

Understanding the technology behind NXT Sentinel

The 3-Second Defense

NXT Sentinel uses advanced on device voice recognition to detect your custom trigger word. When detected, it executes a three step security response in under 3 seconds. Completely silent and without any visible indication.

Why it is different from panic buttons

Traditional panic buttons are visible, audible, or require physical interaction. NXT Sentinel works hands-free and gives no indication to an attacker that help is on the way.

Step by Step Process

1

Always Listening (Privacy First)

NXT Sentinel runs a low power background service that continuously analyzes ambient audio using an on device machine learning model (CoreML for iOS, TensorFlow Lite for Android).

  • • No audio is recorded or stored
  • • All processing happens on your device
  • • Works offline. No internet required
2

Keyword Detection

You set a custom trigger word during setup (for example, "Aunty", "Moon", or "Red Weather"). When the system detects your keyword, it immediately activates the Stealth Execution sequence.

Pro Tip: Choose a phrase you can say naturally in conversation without arousing suspicion.
3

Stealth Execution

Three actions happen simultaneously:

🔒 Hide Apps

Banking, messaging, and photo apps disappear from your home screen and search.

🚨 Alert Contacts

Silent SMS with your GPS location is sent to emergency contacts.

🛡️ Lock Device

UI switches to a "System Maintenance" screen requiring your master password.

Technical Architecture

NXT Sentinel uses operating system level APIs to modify app visibility without uninstalling them. This is done through:

  • Android: Device Policy Controller (DPC) APIs to hide apps at the launcher level
  • iOS: ScreenTime API and FamilyControls framework to restrict app visibility

All trigger word processing uses on device neural processing units (NPU) or digital signal processors (DSP) for real time keyword matching without cloud connectivity.

Patent Pending Innovation

The NXT Sentinel Ambient Voice Triggered Stealth Application Obscuration system is patent pending (USPTO). Our unique approach combines real time voice recognition with silent alerting and decoy UI transitions, all without requiring physical or visual interaction.

Recovery Mode

Once in lockdown, only you can unlock the device using your master password. The decoy "System Maintenance" screen prevents unauthorized users from accessing your hidden apps or realizing the device is in a secure state.

Important

Always test Recovery Mode in a safe environment before relying on it in an emergency.