Network scanner
Findy looks at the Wi-Fi network you are actually joined to and reports what responds: which services are advertised, which camera-associated ports are open, and what has appeared since your last scan of that network.
The network scanner is part of Findy Pro, the optional subscription. The Bluetooth scanner, magnetic checks and guided inspection information are free.
What the scanner does
It runs two passes over the local network, and they answer different questions.
1. Bonjour / mDNS browse
Findy listens for devices that advertise themselves on the local link. It declares and browses
for _rtsp._tcp and _http._tcp — the service types a streaming camera or
a device with a web control panel commonly publishes.
2. TCP-connect port probe
Findy attempts a plain TCP connection to each address on the local /24, on a fixed set of ports associated with cameras, recorders and their control interfaces.
The ports Findy probes
| Ports | Commonly associated with |
|---|---|
554, 8554 | RTSP video streaming |
80, 443, 8080, 8000, 88 | Web and control interfaces on cameras and many other devices |
37777, 34567, 8899 | Vendor protocols used by recorders and network cameras |
Findy fingerprints a device as a possible camera from the combination of ports that answer — an RTSP port carries far more weight than a web port, because port 80 is open on printers, routers, televisions and smart plugs.
New since your last scan
Findy remembers what it saw on each network and badges devices that were not present the previous time you scanned that same network. In a rental or hotel room, something appearing between an arrival scan and an evening scan is a reasonable thing to look at.
How Findy marks what it finds
A device advertising a video service under a camera-suggestive name is genuinely worth investigating.
Findy marks each discovered device either as ordinary or as showing camera-related indicators, and shows the specific reason it was marked.
| Label | What it means |
|---|---|
| Ordinary | Nothing Findy observed about the device is associated with cameras. |
| Shows camera-related indicators | One of the checks below matched. Findy totals these and reports the count as the number of suspicious devices. |
The reason shown beside a marked device is one of the following:
- a name matching a manufacturer known for cameras, shown as "Likely <vendor> camera";
- a name matching a camera-related keyword, shown as "Name matches <keyword>";
- a streaming or surveillance service advertised on the network;
- an open port associated with cameras.
Findy shows the reason behind every flag, so you can see exactly what a device matched on — whether that is a name, an advertised service or an open port.
Getting a scan worth reading
- Join the same Wi-Fi network you want to inspect. Findy can only see the network you are on.
- Scan once shortly after you arrive, so you have a baseline for that network.
- Open any device flagged with a web port in a browser and see what answers. Often it identifies itself immediately.
- Scan again later. Compare the badges for anything that has appeared since.
- Follow up anything interesting with a physical look at the room.
Related
Camera inspection tools cover devices that are not on the Wi-Fi. How Findy works covers all five methods together.
Last reviewed 2026-07-23 · Reviewed by the Findy team at Flaps Apps.