If you want to know what devices are actually being used around you, Spectre is an Android app that listens to the Wi-Fi and Bluetooth your phone already hears, matches them against a signature database, and flags what matters. Useful for: • Lost or hidden tracker tags • Devices moving with you (including a tag under a car seat) • Card-skimmer class radios • Flock-style cameras still talking BLE or Wi-Fi • Axon-class body cams • Fleet / public-safety radios • Meta glasses and wearables • Flipper, Pineapple, Marauder • Known vehicles with a stable keyless / TPMS / infotainment address • Drones — if Remote ID is on BLE, it decodes position and aircraft info Beep, voice, and on-screen alerts. Watch list. Night mode. Multiple views, sorts, and saved filter presets. Catalog is editable. Add IDs directly in the app. Spectre will suggest candidates and fill defaults. Then drill vendor, signal, session, raw payload, and decoded fields when they aren’t encrypted. Push detections to TAK as CoT — ATAK, WinTAK, iTAK. No ads. No subscription. No backend. Works offline. Receive only — no deauth, no handshake capture, no cracking, no connecting. Don’t be a jerk with it. Built for me. Shared because it earned its keep. User guide is in the repo.