Signal Tracker: Hidden Camera

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Everyone
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Content rating
Everyone
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About this app

Signal Tracker is your all-in-one wireless signal scanner, electromagnetic field (EMF) radiation meter, and network security diagnostic suite.

Struggling with slow Wi-Fi? Wondering about electromagnetic radiation around your bed or desk? Or looking to ensure your privacy while traveling in hotels or rentals? Signal Tracker turns your smartphone's built-in hardware sensors into a professional diagnostic laboratory.

Switch seamlessly between Simple Mode for fast one-tap scans and Expert Mode for in-depth radio frequency (RF) metrics and network topology.

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POWERFUL FEATURE MODULES
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1. Wi-Fi & Network Analyzer
• Real-time dual-band scanning across 2.4 GHz and 5 GHz Wi-Fi frequencies.
• Precise signal strength monitoring (dBm / RSSI) with dynamic digital gauges.
• Wi-Fi Channel Analyzer: Detect channel congestion and identify the cleanest, least crowded channel for your wireless router.
• Local Network Device Scanner: Discover all connected phones, computers, and smart devices with IP, MAC address, and vendor identification.
• Network Topology Map: Visually explore the hierarchical structure and connected devices on your network.

2. EMF Radiation & Magnetic Field Detector
• Accurately measures electromagnetic field intensity in microteslas (µT) using your phone's built-in magnetometer.
• Geiger-counter style animated interface with real-time audio ticks and haptic vibration feedback.
• Configurable alert thresholds to notify you immediately when entering high electromagnetic radiation zones.

3. Bluetooth & Tracker Device Scanner
• Discover all nearby active Bluetooth (BLE) devices, beacons, and smart accessories with live proximity estimation.
• Trusted Devices List: Whitelist your personal electronics to isolate unfamiliar or suspicious signals instantly.
• Anti-stalking protection: Detect persistent nearby trackers and rogue tracking devices.

4. AR Optical Lens & Camera Finder
• Use your camera sensor with flashlight illumination to uncover glints and reflections from hidden lenses.
• Augmented Reality (AR) target crosshair assists in methodically inspecting suspicious hardware.

5. Acoustic Spectrum & Decibel Sound Meter
• Measure environmental noise levels accurately in real-time decibels (dB).
• Scan for high-frequency acoustic anomalies and ultrasonic interference patterns.

6. Wi-Fi Signal Heatmap & Waterfall Display
• Walk through your home or office to generate an interactive Wi-Fi coverage Heatmap and pinpoint dead zones.
• Live Signal Waterfall graph dynamically plots frequency stability and RF noise over time.

7. Security Audit Checklist & PDF Reports
• Step-by-step physical inspection checklist for hotel rooms, airbnbs, mirrors, power sockets, and smoke alarms.
• Export comprehensive security audits, peak EMF readings, and network inventories as formatted PDF reports.
• Built-in AI Assistant provides instant, tailored tips to resolve signal drops and improve network speed.

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PRACTICAL USE CASES
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• Home: Optimize router placement, pick interference-free Wi-Fi channels, and measure EMF exposure from home appliances.
• Workplace: Audit office networks, map coverage dead zones, and detect unauthorized hardware.
• Travel: Inspect hotel accommodations for suspicious electronics and verify private network safety.

PRIVACY & PERMISSIONS:
Signal Tracker operates 100% locally on your smartphone. We do not harvest, track, or share your personal data. Required hardware permissions (Camera for AR, Location for Wi-Fi SSID, Mic for Sound Meter) are used exclusively for on-device diagnostics.
Scan Wi-Fi, detect EMF radiation, monitor Bluetooth devices & analyze networks.
Updated on
Sep 24, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location and Device or other IDs
  • This app may collect these data types
    Device or other IDs
  • Data is encrypted in transit
  • Data can’t be deleted