My ASUS ZenWiFi mesh system clearly displays the IP and MAC addresses of all active clients. Some devices are displayed under their normal names. In most cases, this name and an OUI (MAC address database) check are enough to identify the device.
But this trick doesn’t work with some gadgets — the data is too blurry. How else can I unmask them?
Is it possible to physically track a device by measuring where the Wi-Fi signal is strongest? Or perhaps somehow infiltrate their data stream for reconnaissance? What are some life hacks?
There are apps that can help with this. I know for sure that NetSpot for iOS has a device discovery function, and you can run a ping on the devices from the list. There might be other apps with similar features as well.
The “trial and error” method of network administration: blacklist the suspicious device and wait. You’ll either notice the service or device being disabled yourself, or the person whose device you just blocked will very soon announce it loudly.
New smartphones and PCs often randomize MAC addresses. Disable this mode in your home Wi-Fi settings — it only adds unnecessary confusion to a secure home network.
Just block it and wait for someone to yell.