How to increase your chances of finding a hidden camera
We got lucky (if you can say that), the host had the hidden camera on the same network as the wifi that he allowed us access to and the stream was not protected (required authentication to access). Step 2: Do a physical check of the house
Here are some examples:
A camera has to “see” to take an image so it needs a hole (although that can be as small as a pinhole) or a clear substrate to see through. Before we start you should note that a camera will not be discoverable on the network in the following circumstances:
In my case I used an Android app called “Network Scanner – First Row”.
Source: sixfortwelve.wordpress.com