SignalScope 📡

RF Device Scanner — WiFi, Bluetooth & BLE detector with threat analysis.

Features

• 📶 WiFi Scanner — Detect all nearby networks with SSID, channel, security
• 🔵 Bluetooth / BLE Scanner — Identify devices, estimate distance via RSSI
• ⚠️ Threat Detection — Auto-flag suspicious/unknown devices
• 🎯 Live Radar — Animated radar with device blips
• 🌡️ Signal Heatmap — Visual signal intensity map
• 📋 Device Detail — Full info: MAC, RSSI, distance, timeline

Setup

1. Install dependencies

flutter pub get

2. Run on Android device

flutter run

Note: Real scanning requires a physical Android device.
On emulator, mock data is used automatically.

3. Build APK

flutter build apk --release

APK will be at: build/app/outputs/flutter-apk/app-release.apk

Permissions Required

Permission	Purpose
ACCESS_FINE_LOCATION	Required for WiFi + BLE scanning
BLUETOOTH_SCAN	BLE device scanning (Android 12+)
BLUETOOTH_CONNECT	BLE device connection
NEARBY_WIFI_DEVICES	WiFi scanning (Android 13+)

Project Structure

lib/
├── main.dart                    # Entry point
├── theme/
│   └── app_theme.dart           # Colors, typography
├── models/
│   └── scanned_device.dart      # Device model + enums
├── services/
│   └── scanner_service.dart     # WiFi + BLE scanning logic
├── screens/
│   ├── home_screen.dart         # Main screen with tabs
│   └── device_detail_screen.dart
└── widgets/
    ├── common_widgets.dart      # StatCard, DeviceRow, etc.
    ├── radar_widget.dart        # Animated radar
    └── heatmap_widget.dart      # Signal heatmap

Packages Used

Package	Purpose
flutter_blue_plus	BLE scanning
wifi_scan	WiFi scanning
permission_handler	Runtime permissions
provider	State management
google_fonts	Inter + JetBrains Mono
fl_chart	Charts (extendable)
sqflite	Local device history storage

Notes

• Tested on Android 12+
• iOS support requires additional entitlements (CoreBluetooth, CoreLocation)
• Hidden BLE devices with unresolvable MACs are flagged as threats
• Open WiFi networks are flagged as suspicious