WavelensWhat it finds · Likely
Traffic sensors
What it is
A roadside sensor that measures traffic by counting phones, Bluetooth and Wi-Fi devices, or by radar and video: travel-time systems, intersection detectors, people counters in retail and transit.
Who uses it
Transport departments, toll and parking operators, shopping centres, transit agencies and the vendors that run analytics for them.
What it can see
Device addresses and timestamps, used to compute travel time and volume. Operators usually say addresses are hashed or discarded, but that is a policy, not something the radio can confirm.
What it can't do
It generally cannot identify you by name, and it does not see inside your phone. Video-based units see the road, not individuals, as a rule.
How Wavelens finds it
Wi-Fi SSID/BSSID vendor prefixes and BLE manufacturer or name signatures matching known sensor vendors. Some units advertise a maintenance link that is visible from the road.
What to do when you see one
Nothing is required. If you prefer not to be counted, keeping Wi-Fi and Bluetooth off in transit reduces what any such sensor can hear.
Phone or companion?
The phone alone hears these over Bluetooth and Wi-Fi. A Spotter companion ($64) hears them further away.
Get alerted to this while you drive
Wavelens listens for traffic sensors in the background, phone on the dash, and says so out loud when one is in range. Everyone who joins the Android beta before the Play Store launch gets the Play version free with a promo code. Offline, no account, no network permission.
Join the free Android beta Hear it a block further: Spotter, $64
Confirmed only when the device describes itself · 282 signatures · nothing leaves the phone
Classification is a best-effort guess from public signature data. Check before you act on it. None of this is a claim about who owns a device, why it is there, or whether it is lawful.
Where this comes from
- Vendor public documentation and product pages
- IEEE OUI / MA-L registry (Wi-Fi and Bluetooth address vendor prefixes)
- Bluetooth SIG assigned company identifiers
- Independent public research into fixed-camera radio signatures
Other kinds
- 🏷 Item trackers
- 📷 Plate readers
- 🎥 Body cams
- 🚁 Drones
- 📱 Following you
- 🎙 Acoustic sensors
- 🛠 RF and pentest tools
- 🚌 Fleet vehicles
- 📹 Cameras and doorbells
- 🚗 Vehicles
- 📞 Phones
- ⌚ Wearables
Join the free Android beta Hear it sooner: companions from $64