Tracker Detector vs Bandline

Scan your surroundings for hidden Bluetooth trackers and unknown devices that may be following you. Whether you're worried about being tracked or just want to know what's transmitting nearby, Device Finder helps you uncover suspicious signals and physically locate their source. Key Features: • Detect Nearby Trackers: Instantly scan for Bluetooth trackers and unfamiliar devices around you • Spot Suspicious Signals: See every Bluetooth device in range and flag the ones that don't belong • Pinpoint Hidden Devices: Use real-time signal strength to home in on a tracker, even when it's out of sight • Smart Signal Processing: Advanced filtering delivers stable, accurate distance estimates so you can close in on the source • No Registration Required: Start scanning immediately — no account, no setup Upgrade to PRO for: • Real-Time Signal Tracking: Watch the indicator update live as you move closer to a hidden device • Live Scanning: Continuously monitor your surroundings with automatic updates, so no new device slips by unnoticed How It Works: Run a scan to reveal the Bluetooth devices around you. Select any unknown or suspicious one and follow the real-time signal strength indicator — it tells you whether you're getting closer or farther, guiding you straight to the source. It's the fastest way to track down a hidden device or identify a signal you don't recognize. Perfect for: Checking whether you're being tracked Finding hidden Bluetooth trackers Identifying unknown devices nearby Locating a device by its signal strength Peace of mind when you travel, rent a car, or stay somewhere new Download TraceIt now and take control of your privacy. Always know what Bluetooth devices are around you. Terms of Service: https://tracker-finder.com/terms

Heard a signal you can't identify? Bandline narrows 520 known signals down to a handful — from what you can actually measure. Enter a frequency, hold your phone to the receiver, or match a waterfall shape by eye. Everything works offline, in the field, with no account and no connection. — THREE WAYS IN — BY FREQUENCY Type any frequency and see the full allocation stack: primary and secondary service, national applications, footnotes, licence class and power limits. Then see which known signals actually live in that band, ranked by how commonly they're heard. BY EAR (the interesting one) Hold your phone near the receiver's speaker, or plug in a line-in cable. Bandline records a short sample and measures: - occupied bandwidth (−26 dB) - autocorrelation peaks (ACF, in milliseconds) - tone count and tone spacing for MFSK - estimated symbol rate - burst length, duty cycle, on/off periodicity - modulation class (AM, FM, SSB, PSK, FSK, OFDM-like) Each measurement becomes a filter. The candidate list narrows as you go — 520, then 12, then 3. Drop a chip if a reading looks off. Every measurement shows a confidence indicator, because measuring through a phone mic is honest work but not laboratory work. BY SHAPE Browse a visual grid of reference waterfalls, filtered by band and category. You already know what CODAR and STANAG look like — this is faster than reading a list. — SIGNAL CARDS — Name and aliases, category, active status, frequency ranges, modulation, bandwidth, ACF, symbol rate and mode. A reference waterfall you can pinch-zoom and compare side by side with your own capture on a matched frequency axis. A playable audio sample with a live spectrogram. Protocol notes and links to specifications and decoder software. — ALLOCATIONS — Switzerland, Germany, France, the UK and the USA at launch, from official national tables and the European ECA/EFIS data. IARU amateur band plans included. Auto-detects your region, or set it manually. — BUILT FOR FIELD USE — Fully offline once your library is downloaded. Dark theme with an optional red night mode. Monospace numerics throughout. Density over whitespace — the numbers stay on screen. — WHAT THIS ISN'T — Bandline is an instrument and a reference, not a receiver. It does not connect to SDR hardware; it works alongside whatever radio you already own. It identifies signal types, never message content. No decryption, no descrambling, no guidance on intercepting protected communications — by design, permanently. — PRO — One-time purchase, no subscription, ever. Removes ads, unlocks all offline packs, plus unlimited saved captures, waterfall export and a private custom signal library. Signal reference informed by the community work at sigidwiki.com. Corrections welcome from every card.