Know when police gear is near — wherever you are.
Police equipment talks — in every state. Bodycams, Tasers, and camera systems constantly broadcast Bluetooth and Wi-Fi signals so their docks and cars can find them. Cop Spotter listens for those signatures in all 50 states. Pick yours for local coverage in its 50 biggest cities.
Built in small batches. No subscription. No account.
All 50 states, 50 cities each — 2,500 local pages.
50 cities · biggest: Huntsville
50 cities · biggest: Anchorage
50 cities · biggest: Phoenix
50 cities · biggest: Little Rock
50 cities · biggest: Los Angeles
50 cities · biggest: Denver
50 cities · biggest: Bridgeport
50 cities · biggest: Wilmington
50 cities · biggest: Jacksonville
50 cities · biggest: Atlanta
50 cities · biggest: Honolulu
50 cities · biggest: Boise
50 cities · biggest: Chicago
50 cities · biggest: Indianapolis
50 cities · biggest: Des Moines
50 cities · biggest: Wichita
50 cities · biggest: Louisville
50 cities · biggest: New Orleans
50 cities · biggest: Portland
50 cities · biggest: Baltimore
50 cities · biggest: Boston
50 cities · biggest: Detroit
50 cities · biggest: Minneapolis
50 cities · biggest: Jackson
50 cities · biggest: Kansas City
50 cities · biggest: Billings
50 cities · biggest: Omaha
50 cities · biggest: Las Vegas
50 cities · biggest: Manchester
50 cities · biggest: Newark
50 cities · biggest: Albuquerque
50 cities · biggest: New York City
50 cities · biggest: Charlotte
50 cities · biggest: Fargo
50 cities · biggest: Columbus
50 cities · biggest: Oklahoma City
50 cities · biggest: Portland
50 cities · biggest: Philadelphia
50 cities · biggest: Providence
50 cities · biggest: Columbia
50 cities · biggest: Sioux Falls
50 cities · biggest: Nashville
50 cities · biggest: Houston
50 cities · biggest: Salt Lake City
50 cities · biggest: Burlington
50 cities · biggest: Virginia Beach
50 cities · biggest: Seattle
50 cities · biggest: Huntington
50 cities · biggest: Milwaukee
50 cities · biggest: Cheyenne
The signature database is built from public registries — Bluetooth SIG company IDs, IEEE hardware prefixes, and the known broadcast fingerprints of the gear itself.
Axon body cameras announce themselves over Bluetooth so docks can find them — including a hardware signature that survives the address rotation newer cameras use to hide. If a bodycam is close, Cop Spotter knows.
Tasers and Axon vehicle gear broadcast their own Bluetooth identities. Same family, same tell — the spotter matches them against the verified Axon signature set.
Flock safety-camera accessories — extended batteries, setup hotspots — leak recognizable Bluetooth names and Wi-Fi hardware prefixes. Cop Spotter watches both radios.
Modern police radios carry Bluetooth for mics and earpieces, and their hardware shows up in the air with manufacturer fingerprints. A radio match strobes the light exactly like every other gear type — nothing is second-class.
AirTags, SmartTags, Tiles and other tracking tags call home over Bluetooth. Cop Spotter listens for them too — when one is close enough to be traveling with you, the light pulses purple, and the pulse quickens as you get closer, so you can walk it down.
Skimmers hidden inside pumps and card readers phone home through cheap Bluetooth serial modules — and those modules advertise. When one is close, the light blinks amber before your card goes in.
Also in the database: Utility BodyWorn bodycams, Axon Fleet in-car systems, WatchGuard & Digital Ally in-car video, police drones (DJI and anything flying Remote ID), Stryker LIFEPAK ambulance monitors, Cradlepoint patrol-car routers, and Geotab fleet telematics — 103 verified hardware fingerprints in all.
No screen to read. One light tells you everything.
The board continuously scans Bluetooth and Wi-Fi broadcasts — the public advertisements devices send out so other equipment can discover them.
Every broadcast is checked against the signature database: company IDs, service UUIDs, hardware prefixes, and device names known to belong to police equipment, tracking tags, and skimmer hardware.
When a signature matches, the light answers in color — every gear type counts, radios included. Cooldowns between alerts keep the light meaningful instead of constant.
No modes, no menus — Cop Spotter listens for everything at once, and the color names what it heard.
Purple and amber only fire at close range — close enough to be on you or your car — so a crowd full of other people’s trackers doesn’t cry wolf.
Small batches, built to order.
The detector board, with the detection firmware loaded and the signature database installed. You add any USB-C power source — a power bank makes it pocket carry.
Buy now — $50Secure checkout via Stripe — shipping included, address collected at checkout (U.S.). Questions first? [email protected]
The same detector on your Android phone — all 103 signatures. It listens only, holds no internet permission, and collects nothing. Free, no account; the APK installs direct.
If it earns its keep, chip in: support goes straight into the next batch of boards.
Receive-only, by design. Cop Spotter listens to public broadcast advertisements that devices intentionally transmit for discovery. It does not intercept, decrypt, record, or interfere with any communication, and it transmits nothing.
Know your local laws. Rules around detection equipment vary by place. What the device does is legal in most of the U.S., but the responsibility for where and how you use it is yours.
No guarantees. Detection depends on the target gear being powered and advertising. This is an awareness tool, not a safety device.