SHADOW PROX

Know when Bluetooth devices are following you.

Shadow Prox is a personal safety app that silently detects if BLE trackers, phones, or other Bluetooth devices are persistently near you across time and locations.

Shadow Prox
Shadow Prox
ALPHA
Currently in Private Alpha Testing

iOS app in active development • macOS prototype functional • ESP32 hardware designed

Estimated Public Beta: Q4 2026 • Target Launch: Q1 2027

What Shadow Prox Does

BLE Device Detection

Continuously scans for all Bluetooth Low Energy devices around you. Identifies Apple AirTags, Samsung SmartTags, Tile trackers, and thousands of other BLE devices by their manufacturer signatures.

Fingerprint Tracking

Tracks devices even when they rotate their MAC addresses (a common privacy technique). Uses multi-field fingerprinting to link rotating identities back to the same physical device.

Location Correlation

Combines BLE sightings with GPS location to detect if the same device follows you from home to work to the store. Clusters locations and scores persistence over time.

Threat Detection

Five specialized detectors identify known trackers, hidden trackers (minimal-data devices), device clones, MITM attacks, and relay attacks. Severity levels from LOW to CRITICAL.

How It Works

1. Scan
Continuously detects all BLE devices in range
2. Identify
GATT probing reveals manufacturer, model, firmware
3. Track
Monitors persistence across time and locations
4. Alert
Notifies you when a device is following you

Development Status

Platform Status Features
iOS (iPhone) Alpha BLE scanning, GATT probing, fingerprinting, globe map, threat detection, device tagging, CSV export, safe device auto-detection
macOS Alpha Full BLE scanner, Leaflet map with animated zoom, surveillance engine, IOBluetooth paired device enumeration
ESP32-S3 Hardware Designed WiFi packet capture, panic button, BLE relay, standalone scanning. Firmware scaffold complete.
Cloud Backend Designed Django REST API for tag sync, device sighting sharing, avoid flags. Railway deployment planned.
Android Planned Kotlin/Jetpack Compose port of iOS app. Future phase.

Product Tiers

Guardian
Free
  • BLE device detection
  • Known tracker alerts
  • Device fingerprinting
  • Safe device marking
  • Basic persistence scoring
  • CSV data export
Sentinel
~$5/month
  • Everything in Guardian
  • Cloud tag synchronization
  • Multi-device alerts
  • Location alert zones
  • Historical reports
  • Priority support
Overwatch
~$15/month + hardware
  • Everything in Sentinel
  • ESP32-S3 hardware device
  • WiFi probe request capture
  • Physical panic button
  • Extended BLE range relay
  • Standalone offline scanning

Technology

Swift / SwiftUI
Native iOS
Python / PySide6
macOS prototype
ESP-IDF / NimBLE
ESP32-S3 firmware
Django REST
Cloud backend